3rd International
Nanotechnology Conference & Expo

May 7-9, 2018 at Rome, Italy

Program Schedule

  • Keynote Speaker

    Time:

    Title

    Title: Nanomaterials for High Performance Supercapacitor

    Jae-Jin Shim
    Yeungnam University, Korea
    Biography
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    Biography

    Jae-Jin Shim received his B.S. in Chemical Engineering from Seoul National University in 1980, M.S. in Chemical Engineering from Korea Advanced Institute of Science and Technology (KAIST) in 1982, and Ph.D. in Chemical Engineering from the University of Texas at Austin in 1990. He is a professor in the School of Chemical Engineering at Yeungnam University, Korea. He served as the President of Korean Society of Clean Technology (KSCT) and the editor of JKSCT and KJChE. His current research focuses on graphene-based nano materials for energy storage (supercapacitor), sensor, and photocatalysis using clean solvents (supercritical fluids, ionic liquids, and water).



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    Sessions:
    Nano, Bio, Micro/Nano particles & Synthesis & Architecture of Nanomaterials & Nanoscale characterization & Nanophotonics and plasmonics

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    Title: Influence of the Addition of Elemental Zr or Zirconia on the Properties of 14Cr ODS Steels Consolidated by SPS

    Andrea Garcia-Junceda
    IMDEA Materials Institute, Spain

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    Biography

    Andrea Garcia-Junceda
    IMDEA Materials Institute, Spain

    Dr. Andrea Garcia-Junceda graduated in both Chemistry and Materials Engineering at the Complutense University of Madrid. She is currently the head leader of the Solid State Processing Group at IMDEA Materials Institute. This group is collaborating with important research centers and companies in the field of powder metallurgy. The main goal of her group is focused on the design and development of advanced alloys with outstanding properties. She is co-author of 22 journal publications. She has been involved in 12 competitive research projects. At the present time, she is the principal investigator of the FP7 project entitled PILOTMANU.



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    Andrea Garcia-Junceda
    IMDEA Materials Institute, Spain

    The addition of Zr to ODS ferritic steels provides a way to enhance the formation of finer and more stable oxides than those obtained in ODS steels with Y-Ti-Al addition. The formation of zirconium rich nano-oxides may prevent grain growth and refine the final grain size leading to an improvement of the mechanical properties. In addition, another advantage is based on the fact that Zr leads to an improvement in the resistance to the irradiation damage since its oxides exhibit good irradiation tolerance and thermal stability. In the present investigation, a 14Cr-5Al-3W alloy is modified by adding Ti, Y2O3 and Zr in two different ways, as pure elemental Zr powder or as ultrafine ZrO2 powder. These ferritic ODS steels are processed by high energy milling in a horizontal attritor and subsequent consolidation by SPS. Special emphasis is focused on understanding the differences in the final properties achieved after consolidation depending on the Zr source, and thus on the amount of oxygen available for re-precipitation of oxides during SPS. In order to assess the microstructural properties of these alloys, SEM studies coupled to EBSD mapping are performed. Finally, hardness and micro-tensile tests are carried out to assess the differences in the mechanical properties.

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    Title: TiO2 Nanomaterials Sensitized by Porphyrins – Study of Electron Injection and Back Recombination Processes

    Swati De
    University of Kalyani, India

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    Biography

    Swati De
    University of Kalyani, India

    Swati De did her PhD in 1998 under Professor Kankan Bhattacharyya, a reknowned spectroscopist. She joined the Department of Chemistry, University of Kalyani, India as an Assistant Professor in 1999. She has been there since and is presently Professor. She did her post doctoral work with Professor Villy Sundstrom at Lund University, Sweden. She has published several research papers, one invited Book Chapter in the Encyclopedia of Biocolloid and Biointerface Science , John Wiley and Sons. She has an h-index of 19 (Scopus). She has completed guidance of 7 Ph.D students and several others are working. Her research interests are: Application driven synthesis of nanomaterials. Fluorescence probing of membrane mimicking systems



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    Swati De
    University of Kalyani, India

    Over the past few years, sensitization of large band gap semiconductors by organic dyes has received considerable attention in research due to the potential applications of such Dye / Semiconductor (D / SC) systems. One of the important applications of such D / SC systems is in the photoanodes of Dye Sensitized Solar Cells (DSSCs), the semiconductor of choice in such systems being TiO2.1 Effective electron transfer from the excited dye to the TiO2 conduction band requires good electronic coupling between the two. Hence the scientific focus is on dye sensitization of TiO2. Among various categories of dyes used as photosensitizers, Porphyrins are promising because of their strong Soret absorption and moderate Q-band absorption. The present talk will focus on the work done at our laboratory on the synthesis of interesting TiO2 based nanomaterials i.e. nanoparticles and nanosheets and their subsequent sensitization by porphyrins. The emission intensity of the porphyrin dyes is quenched by the TiO2 based nanomaterials and the dominant process for this quenching has been attributed to photoinduced electron injection from the excited state of porphyrin to the nanomaterials. We have shown how the Porphyrin / TiO2 systems show extremely fast rates of electron injection (1011 s-1 for the porphyrin /nanosheet system) while the rate of back recombination is much retarded (103 s-1 for the porphyrin/nanoparticle system). Both these effects will be beneficial for efficient functioning of future solar cells based on such photoanode materials.

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    Title: Diameter Controlled Growth of SWCNTs Using Ru as Catalyst Precursors Coupled with Atomic Hydrogen Treatment

    Fatima bouanis
    University Paris Est, France

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    Biography

    Fatima bouanis
    University Paris Est, France



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    Fatima bouanis
    University Paris Est, France

    In this work, we present a practical approach for controllingSingle Walled Carbon Nanotubes(SWCNTs) diameter distribution through thin film Ru catalyst coupled with hydrogen pre-treatment. Uniform and stable Ru nanoclusters were obtained after dewetting the Ru thin films under atomic hydrogen pre-treatment. SWCNTs were synthetized by double hot filament chemical vapor deposition (d-HFCVD) on SiO2/Si substrates at different temperatures. We found that the temperature is an important synthesis parameter that influences the diameter distribution of the final SWCNTs. Statistical analysis of the Raman radial breathing modes evidences the growth of highly enriched semi-conducting SWCNTs (about 90%) with narrow diameter distribution that correlates directly with the catalyst particle size distribution. Electrical measurement results on as-grown SWCNTs show good thin-film transistor characteristics.

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    Title: Atomic Mixing at Interfaces in Nano-Structures

    Emil Zolotoyabko
    Technion-Israel Institute of Technology, Israel

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    Biography

    Emil Zolotoyabko
    Technion-Israel Institute of Technology, Israel

    Emil Zolotoyabko is Professor Emeritus in the Department of Materials Science and Engineering at the Technion Israel Institute of Technology. He is holder of the Abraham Tulin Academic Chair and recipient of the Henry Taub Prize for Academic Excellence. For six years he served as the Departments Head. He graduated from Moscow Institute of Physics and Technology and earned PhD and ScD degrees in Solid State Physics from Physics Institute of the Latvian Academy of Sciences. Professor Zolotoyabko has authored three books and 180 scientific papers focused on atomic structure and nano-structure in various materials systems.



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    Emil Zolotoyabko
    Technion-Israel Institute of Technology, Israel

    Short-period superlattices, based on semiconductor or oxide layers, have wide range of applications from infrared imaging to giant magneto-resistance devices. Some of them require deposition of a nm-thick sub-layers. In these systems, the interface quality becomes crucial for device functioning. Most common imperfections are related to atomic intermixing during growth that is difficult to probe on such short length scales. We use for this purpose advanced characterization techniques, which include high-resolution transmission electron microscopy (HRTEM) for lattice imaging and, especially, high-angle annular dark field (HAADF) in scanning transmission electron microscopy (STEM) for Z-contrast imaging, scanning tunneling microscopy (STM) for direct counting of atomic substitutions on freshly fractured surfaces, local electrode atom probe (LEAP) tomography for three-dimensional chemical analysis with a sub-nm-resolution, and high-resolution X-ray diffraction (HRXRD) for spatial profiling of inter-planar spacings. In the current work, we apply all these methods to study atomic intermixing in short-period GaSb/InSb/InAs/InSbsuperlattices for infrared detectors. We discuss the suitability, complementarity, uniqueness, and limitations of the above mentioned characterization techniques.

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    Title: Plasmonic Catalysis: Heating vs. Hot Electrons

    Jie Liu
    Duke University, USA

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    Biography

    Jie Liu
    Duke University, USA

    Jie Liu is currently the George B Geller Professor of Chemistry at Duke University. He earned a B.S. in Chemistry from Shandong University in 1987 and a Ph.D. in Chemistry from Harvard University in 1996. His research interests include synthesis and chemical functionalization of nanomaterials, plasmonic catalysis, nanoelectronic devices, scanning probe microscopy, and carbon nanomaterials. As a faculty member, Professor Liu has received the DuPont Young Professor Award, Outstanding Oversea Young Investigator Award from NSF-China, Ralph E. Powe Junior Faculty Enhancement Award from Oak Ridge Associated Universities, and Bass Professorship from Duke University for excellence in teaching and research. He is elected as a Fellow in AAAS (2013), APS (2014) and RSC (2013). He also serves as an associate editor for RSC journal Nanoscale since 2012.



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    Jie Liu
    Duke University, USA

    In plasmon-enhanced heterogeneous catalysis, illumination accelerates reaction rates by generating hot carriers and hot surfaces in the constituent nanostructured metals. In order to understand how photo-generated carriers enhance the non-thermal reaction rate, the effects of local heating and thermal gradients in the catalyst bed must be confidently and quantitatively characterized. This is a challenging task considering the conflating effects of light absorption, heat transport, and reaction energetics. Here, we introduce a methodology to distinguish the thermal and non-thermal contributions from plasmon-enhanced catalysts, demonstrated by illuminated rhodium nanoparticles on oxide supports to catalyze the CO2 methanation reaction. By simultaneously measuring the total reaction rate and the temperature gradient of the catalyst bed, the effective thermal reaction rate may be extracted. The residual non-thermal rate of the plasmon-enhanced reaction is found to grow with a super-linear dependence on illumination intensity, and its apparent quantum efficiency reaches ~46% on a Rh/TiO2 catalyst at a surface temperature of 350 °C. Heat and light are shown to work synergistically in these reactions: the higher the temperature, the higher the non-thermal efficiency in plasmon-enhanced catalysis.

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    Title:

    Liangchi Zhang
    University of New South Wales, Australia

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    Biography

    Liangchi Zhang
    University of New South Wales, Australia



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    Liangchi Zhang
    University of New South Wales, Australia

    Monocrystalline silicon carbide is a promising material for advanced components and devices, because it has very strong covalent bonding and presents excellent properties such as ultrahigh hardness (25~30 GPa), very low coefficient of thermal expansion (~4 × 10-6 /K) and outstanding thermal and chemical stabilities. However, these superior properties have also made SiC a difficult-to-machine material. This presentation will discuss our recent investigations into the deformation mechanisms of a SiC under nanocutting with the aid of large-scale molecular dynamics analysis. We studied six typical combinations of cutting plane and direction were studied, namely, (0001)  1120  , (0001)  1100  , (1120) 1100  , (1120)  0001  , (1100)  0001  and (1100) 1120  . We found that the cutting-induced deformation morphology, activated dislocations and cutting forces varied significantly under different combinations of cutting conditions due to the strong anisotropy effect of the material. By evaluating the actual depth of cut, elastic recovery, surface roughness and maximum subsurface damage depth, we identified that the basal plane (0001) along  1100  direction is the most suitable combination for nanocutting.

    Time:

    Title: Photosynthesis vs. Traditional Chemical Synthesis for Obtaining Biocompatible Drug Delivery (dds) Nanoparticles: A Review

    Gomaa F Salma
    American University in Cairo, Egypt

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    Biography

    Gomaa F Salma
    American University in Cairo, Egypt



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    Gomaa F Salma
    American University in Cairo, Egypt

    Recently, the applications of nanoparticles (NPs) in nanomedicine have gained a lot of interest. They can be used for biological labeling, biosensors and as therapeutic agents. As a result, there is an urgent need to develop synthesize techniques that can result in more biocompatible Nps, suitable for biomedical applications . Chemical methods for the preparation of NPs are simple, easy to perform and very variable. However, their main disadvantages is the use of toxic chemicals [2, 3]. In the search of better pathway for synthesizing metal Nps that can overcome these limitations, researchers have turned to biological systems. Biosynthetic (biogenic) techniques employ proteins, microbes or plant extract for nanoparticles production. The target is to implement safer and biocompatible synthetic methods that eliminate using harmful chemical reagents, thus has no/less harmful impact on human beings. Photosynthesis of NPs using plant extracts have been extensively investigated. Plant extract contains intrinsic phytochemicals such as saponins, terpenoids, proteins, polyphenols and flavonoids, having the properties of stabilizers/ emulsifiers. It can be used for the synthesis of biocompatible, monodisperesd NPs of minimum particle size. In comparison to other biological synthesis techniques, Nps synthesized using plants are more stable and the synthesis rates are more rapid. Problems associated with complex treatments (e.g. microbial isolation, culturing, maintenance) are resolved in the case of photosynthesis. Furthermore, the controlled flexibility in the size and morphology of obtained NPs are considered higher in case of photosynthesis due to the diverse candidates of plants. This review provides an overview of recent trends in the photosynthesis of NPs, expected mechanism for the biosynthesis process, and their potential advantage in the field of drug delivery. Key words: Green Chemistry, nanoparticles, drug delivery, mono-dispersed.

    Time:

    Title: Preparation, Characterization and Catalytic Activity of Gelatin-Stabilized Copper Nanoparticles

    Aminu Musa
    Umaru Musa Yaradua University, Nigeria

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    Biography

    Aminu Musa
    Umaru Musa Yaradua University, Nigeria

    Aminu Musa has completed his PhD in 2017 from the Universiti Putra Malaysia, Malaysia under TETFUND Nigeria Scholarship. He is now lecturer I in the department of Pure and Industrial Chemistry, Umaru Musa Yar’adua University, Katsina, Nigeria and has been doing research in synthesis of nanocrystalline cellulose from the agricultural waste. His research interests in preparation of metal nanoparticles supported on biopolymers for catalytic and antimicrobial applications. He has published papers in international reputed journals.



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    Aminu Musa
    Umaru Musa Yaradua University, Nigeria

    Synthesis of copper nanoparticles was carried out with gelatin as a stabilizer by reducing CuSO4.5H2O ions using hydrazine. Ascorbic acid and aqueous NaOH were also used as an antioxidant and pH controller, respectively. The effects of NaOH, hydrazine, concentration of gelatin as stabilizer were studied. The synthesized copper nanoparticles were characterized by UV-visible spectroscopy (UV-vis), powder X-ray diffraction (XRD), zeta potential measurements, fourier transform infrared spectroscopy (FTIR), energy dispersive x-ray (EDX), field emission scanning electron microscopy (FESEM) and transmission electron microscope (TEM). The formation of CuNPs@Gelatin is initially confirmed by UV-vis spectroscopic analysis with the characteristics band at 583 nm. XRD and TEM reports revealed that CuNPs@G4 is highly crystalline and spherical in shape with optimum average size of 4. 21 ± 0.95 nm. FTIR onto the surface which is further supported by zeta potential measurements with the negative optimum value of -37.90 ± 0.6 mV. The CuNPs@G4 showed good catalytic activity against MB reduction using NaBH4 as reducing agent in an aqueous solution. The best enhanced properties of CuNPs@G4 were found for the 0.75 wt. % gelatin concentration. Thermodynamic parameters (ΔH and ΔS) indicate that under the studied temperature, the reduction of MB by CuNPs@G4 is not feasible and had endothermic in nature.

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    Title:

    Pegah S Nabavi Zadeh
    Chalmers University of Technology, Sweden

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    Biography

    Pegah S Nabavi Zadeh
    Chalmers University of Technology, Sweden

    Pegah S. Nabavi Zadeh received her M.Sc. in biotechnology at Lund University, Lund, Sweden, after doing her diploma work on improving the effect of preservatives by encapsulation at Swedish institute for food and biotechnology (SIK) within the group of material characterization. Therefore, she started her PhD project at Chalmers University of Technology, Gteborg, Sweden regarding enzyme immobilization in mesoporous silica particle from a physical-chemical perspective in the physical chemistry division. The project aim was to characterize the behavior of enzymes after/ during the immobilization, also identify the environment that enzyme experience inside the pore after immobilization.



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    Pegah S Nabavi Zadeh
    Chalmers University of Technology, Sweden

    The focus of this talk is placed on the dynamic behavior of proteins in confining environments which is studied as a scientific challenge for a deeper understanding of the immobilization mechanism and a better designing of enzyme immobilization in porous materials. Enzymes are immobilized in porous materials to improve the enzyme activity and simplify their purification from the product solution in biocatalytic applications. Mesoporous silica particle is used as solid support material for immobilization of enzymes. By using various spectroscopic techniques it is possible to probe the environment that enzymes experience inside the pores and/or outer surface of solid porous materials in terms of pH, polarity and characterize the behavior of enzymes after attaching or during the immobilization process. All research presented in this talk are an effort to get closer to the mechanistic steps of immobilization process. Recently, we have suggested a fluorescence spectroscopy assay based on dye-labelled proteins to monitor the whole immobilization process into mesoporous silica in real time. The main aim is to quantify the kinetics of the enzyme immobilization into mesoporous particles and alsoinvestigate how the rate of the immobilization depends on protein size for a given pore size. Moreover, by using steady state and time-resolved fluorescence anisotropy which has been done based on the intrinsic fluorescence (Tryptophan) in proteins, the rotational mobility of enzymes is investigated and by suggesting a ratio-metric method to measure the viscosity inside the particles andalso calculating pore filling, three possible mechanisms for decrease in rotational mobility of immobilized proteins are discussed.

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    Title: Self-Consistent Green's Function Embedding Based on a Dynamical Mean-Field Concept

    Wael Chibani
    Fritz-Haber-Institut der Max-Planck-Gesellschaft, Germany

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    Biography

    Wael Chibani
    Fritz-Haber-Institut der Max-Planck-Gesellschaft, Germany

    I am a theoretical Physicist with a Master/Bachelor from the Technical University of Munich and a PhD in theoretical computational physics. I got my PhD after a 4 years and 6 months stay at the Fritz-Haber Institute of the Max-Planck Society in Berlin, where I worked with the group of professor Matthias Scheffler on a novel embedding scheme based on Green functions following a dynamical mean-field concept. After my defense I worked for 6 months on a project part of the Novel Materials Discovery (NoMAD) Laboratory. After that I moved to industry to work as a Consultant at Planisware Deutschland GmbH, where I still work today.



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    Wael Chibani
    Fritz-Haber-Institut der Max-Planck-Gesellschaft, Germany

    In this talk I introduce an embedding scheme for periodic systems, the Real-Space Dynamical Mean-Field Embedding (RDMFE) [1], that facilitates a self-consistent treatment of the physically important part of a system with electronic structure methods, that are computationally too expensive for periodic systems. I use dynamical mean-field theory [2] (DMFT) to couple to the rest of the system, which is treated with less demanding approaches such as Kohn-Sham density functional theory. In contrast to the original DMFT formulation for correlated model Hamiltonians, I consider here the unit cell as local embedded cluster in an ab initio way, that includes all electronic degrees of freedom. The performance of my scheme is demonstrated by treating the embedded region with hybrid and GW self-energies (scGW) for simple bulk systems. The total energy and the density of states converge rapidly with respect to the computational parameters and approach their bulk limit with increasing cluster size. For non self-consistent GW calculations a Plasmon satellite for Si is observed in good agreement with periodic G0W0 calculations [3] - that vanish at self-consistency. The RDMFE@scGW gap of 0 .9 eV for a two atom unit cell agrees well with previous G0W0 calculations and experiment. The same is true for the RDMFE@scGW band structure. The Analysis I present in this talk reveals that RDMFE has the potential to make advanced electronic methods accessible for unprecedented system sizes offering a multitude of application possibilities. The RDMFE scheme is thus a significant step towards making highly accurate theoretical approaches applicable to large systems. [1] W. Chibani et al. PRB (2016) [2] A.Georges et al., Rev.Mod.Phys. (2006), [3] M.Guzzo et al., PRL (2011)

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    Title: Defect States in Hexagonal Boron Nitride: Assignments of Observed Properties and Prediction of Properties Relevant to Quantum Computation

    Sajid Ali
    University of Technology Sydney, Australia

    Biography
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    Biography

    Sajid Ali
    University of Technology Sydney, Australia

    SAJID ALI is a 3rd year PhD student at University of Technology Sydney, Ultimo, New South Wales 2007, Australia. He is also a lecturer in physics at GC University Faisalabad, PAKISTAN. . He has over 15 publications that have been cited over 100 times.



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    Sajid Ali
    University of Technology Sydney, Australia

    Key properties of 9 possible defect sites in hexagonal boronitride (h-BN), VN, VN-1, CN, VNO2B, VNNB, VNCB, VBCN, VBCNSiN, and VNCBSiB, are predicted using density-functional theory (DFT) corrected applying results from high-level ab initio calculations. Observed h-BN electron-paramagnetic resonance (EPR) signals at 22.4 MHz, 20.83 MHz, and 352.70 MHz are assigned to VN, CN, and VNO2B, respectively, while the observed photoemission at 1.95 eV is assigned to VNCB. Detailed consideration of the available excited states, allowed spin-orbit couplings, zero-field splitting, and optical transitions is made for somewhat analogous defects VNCB and VBCN. Long-living quantum memory in h-BN can be achieved for VNCB owing to the lifetime differences of first and second order transitions from different triplet sub-states to the singlet ground state as is seen for N2V defect in diamond. While VBCN is predicted to have a triplet ground state, and for it spin-polarization by optical means is predicted to be feasible while suitable optical excitations are also identified, making this defect of interest for possible quantum-qubit operations.

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    Title: Single Twinning Event Induced by Nano-Indentation in Magnesium

    Mohan Setty
    Deakin University, Australia

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    Biography

    Mohan Setty
    Deakin University, Australia

    Mohan Setty is a Senior Research Engineer at Institute for Frontier Materials, Deakin University, Australia. Mohan began his research career a decade ago, working on light metals and its alloys. His research interest is primarily in mechanical characterization of materials, which includes nano-scale characterization as well. Over the past decade he has carried out research related to microstructure, thermo-mechanical processing and mechanical properties of Strip cast steel, Carbon fibers, Titanium, Aluminum and Magnesium alloys. His most recent work on nano-mechanical characterization includes: testing radial heterogeneity of PAN fibers, room temperature and high temperature testing of TiN thin films, precipitate distribution in Al alloys, quantifying individual phase properties of high entropy alloys etc.,



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    Mohan Setty
    Deakin University, Australia

    Nano indentation provides the opportunity to study single twinning events. In the present work, a Nano indenter equipped with spherical tips of various radii was employed to examine a range of magnesium alloys as well as a single crystal of pure Mg. Our objective is to correlate features of the load displacement curve with twinning events and to ascertain twin initiation and growth stresses as well as the general phenomenology of the twinning events. Samples prepared to a very high quality surface finish, using mechanical polishing displayed a yielding point on the load-penetration depth curve corresponding to departure from Hertzian contact. This corresponded to the appearance of basal slip lines on the sample surface. Pop-in events were then observed at higher loads and these were marked by the simultaneous appearance of twins, evident on the surface following unloading. Twin thickening during continued penetration and shrinkage during unloading were also detected. Crystal plasticity finite element modelling was employed to estimate the stress state prior to the appearance of twinning. This enables us to estimate the critical stress for twin initiation but there is still considerable uncertainty in the values the non-unique nature of the model predictions.

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    Title: Recent Applications of Nanotechnology in Advanced Drug Delivery Systems

    Hussein O Ammar
    Future University, Egypt

    Biography
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    Biography

    Hussein O Ammar
    Future University, Egypt

    Holder of the First Class Golden Medal for Sciences and Arts and the recipient of the 2010 Appreciation State Prize in the realm of Advanced Technological Sciences. Professor Ammar is currently the Chairman, Pharmaceutical Technology Department, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University in Egypt; formerly, Dean of the Pharmacy Division, National Research Centre, Cairo, Egypt. He has 127 research papers published in international scientific journals. These research papers cover most of the areas related to pharmaceutics, biopharmaceutics and pharmacokinetics. Design of new drug delivery systems is not beyond the scope of his interest.



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    Hussein O Ammar
    Future University, Egypt

    Nanotechnology is attracting great attention worldwide in biomedicine. Targeted therapy based on drug nanocarrier systems enhances the treatment of tumors and enables the development of targeted drug delivery systems. In recent years, theranostics are emerging as the next generation of multifunctional nanomedicine to improve the therapeutic outcome of cancer therapy. Polymeric nanoparticles with targeting moieties containing magnetic nanoparticles as theranostic agents have considerable potential for the treatment of cancer. The use of directed enzyme prodrug therapy (DEPT) has been investigated as a means to improve the tumor selectivity of therapeutics. Magnetic DEPT involves coupling the bioactive prodrug-activating enzyme to magnetic nanoparticles that are then selectively delivered to the tumor by applying an external magnetic field. Gene therapy is an attractive method for meeting the needs for curing brain disorders, such as Alzheimers disease and Parkinsons disease. On the other hand, due to the fact that hepatocellular carcinoma (HCC) is resistant to standard chemotherapeutic agents, gene therapy appears to be a more effective cure for HCC patients. Ultrasound-mediated drug delivery is a novel technique for enhancing the penetration of drugs into diseased tissue beds noninvasively. This technique is broadly appealing, given the potential of ultrasound to control drug delivery spatially and temporally in a noninvasive manner.

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    Title: Immobilization of Silver Nanoparticles Synthesized Using White Rot Fungi on Cotton Cloth for Bactericidal Activity

    Gudikandula Krishna
    Kakatiya University, India

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    Biography

    Gudikandula Krishna
    Kakatiya University, India

    Dr Krishna from India, He did Ph.D in Nanotechnology from microbiology background. He has published more than 20 research articles in reputed journals.



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    Gudikandula Krishna
    Kakatiya University, India

    Silver nanoparticles (AgNPs) were synthesized using two white rot fungi; the extract was acted as a reducing and stabilizing agent. The formation of AgNPs was observed by UV- Vis spectroscopy and surface plasmon resonance (SPR) occurred at 420 nm. The SEM analysis revealed that fixing of synthesised nanosilver in treated fabrics. Furthermore, the biologically synthesized AgNPs were immobilized on cotton fabrics and screened for antibacterial activity. The immobilized AgNPs on cotton cloth showed high antibacterial activity against S. aureus, M. leutes, K. pneumoniae and P. aeruginosa species.Therefore, they could be a viable alternative source in treating wounds or may help in replacing pharmaceutical band-aids. Keywords: Bioreduction, silver nanoparticles, cotton fabric, Agar well diffusion , Antibacterial activity

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    Title: Simulation of Nanoscale Algan/Gan High -Electron Mobility Transistors Employing Field-Plate Technology

    Mourad Kaddeche
    University de DjilaliBounaama-Khemismiliana, Algeria

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    Biography

    Mourad Kaddeche
    University de DjilaliBounaama-Khemismiliana, Algeria



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    Mourad Kaddeche
    University de DjilaliBounaama-Khemismiliana, Algeria

    The excellent microwave power performance demonstrated in AlGaN/GaN HEMTs (high-electron mobility transistors) results from the combination of high current density with high voltage operation [1], which benefits from the high sheet charge density in these hetero-structures (1013 cm-2), the high carrier mobility (1500 cm2/Vs) and saturation velocity (1.5 × 107 cm/s) in the channel and the high breakdown voltage inherent in the GaN material. However, their reliability still limits their applications in today’s electronic systems. The newly developed field-plated AlGaN/GaN high electron mobility transistors show improved performance dueto the electricfield reduction in the device channel and surface modification [2]. We report on two dimensional numerical simulations of gate-recessed and field-plated AlGaN/GaN HEMTs where all the important device parameters have been defined, the insulator thickness under the field plate is also an important design parameter to attain higher breakdown voltage, thus an improvement of the performances of HEMT devices. [1] Y. F. Wu, A. Saxler, M. Moore, R. P. Smith, S. Sheppard, P. M. Chavarkar, T. Wisleder, U. K. Mishra, and P. Parikh, IEEE Elect. Dev. Let. 117(2004) 25 [2] K. H. Cho, Y. S. Kim, J. Lim, Y. H. Choi, M. K. Ha, Sol.Stat. Elect. 405(2010) 54.

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    Title: Chitosan Nanoparticle Synthesis in a Microfluidic System

    Yegan Erdem
    Bilkent University, Turkey

    Biography
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    Biography

    Yegan Erdem
    Bilkent University, Turkey

    E.Y. Erdem is an assistant professor in the Mechanical Engineering Department at Bilkent University, Ankara, Turkey. She received her BS degree from Sabanci University (Istanbul, Turkey) in 2006 in Mechatronics Engineering. She received her MS degree from University of Washington (Seattle, USA) in Mechanical Engineering in 2008 and PhD degree from University of California at Berkeley (Berkeley, USA) in Mechanical Engineering in 2013.



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    Yegan Erdem
    Bilkent University, Turkey

    Nanoparticles have attracted a lot of attention in the past few decades due to their unique size-dependent properties and their great potential in biotechnology for applications such as bioseparation, tagging, imaging and drug delivery. It is important to synthesize them with monodisperse size and shape to obtain uniform properties. Currently synthesis and functionalization of nanoparticles for biotechnology is made with batch techniques. However batch processes lack the ability to obtain uniform size and shape which reduces their sensitivity and selectivity for detection. Microfluidics is an alternative method by which the limitations of conventional techniques can be addressed. Handling small volumes of liquid allows better control of mixing, and hence yields more uniform chemical composition. Chitosan is one of the most suitable materials that can be used in drug delivery due to its biocompatibility, low toxicity, biodegradability and stability. When it is synthesized in nanometer dimensions, due to its small size and pH responsive chemistry it can penetrate into cells to release the drug it carries. However, all of the properties of chitosan is dependent on its size when it is not in the bulk form. Therefore monodispersity is necessary to obtain uniform properties among the synthesized nanodrugs. Microfluidic systems provide several advantages in nanomaterial synthesis as handling small volumes of liquid gives the ability of rapid mixing, accurate and fast temperature monitoring, achieving precise concentrations and preventing excess usage of materials. Due to the small volumes of liquid, rapid mixing can be achieved and different temperature zones can be obtained. Here we propose a droplet-based microfluidic system to synthesize chitosan nanoparticles in a controlled way. In order to perform targeted drug delivery, nanoparticles will be composed of both a magnetic material and chitosan that carries the drug. Therefore a two step synthesis methodology will be used.

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    Title: Zns/Cu2znsns4/Cdte/In Thin Film Structure for Solar Cells

    Maarif Jafarov
    Baku State University, Azerbaijan

    Biography
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    Biography

    Maarif Jafarov
    Baku State University, Azerbaijan



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    Maarif Jafarov
    Baku State University, Azerbaijan

    Zinc sulfide (ZnS) is a wide direct band gap, high optical absorption coefficient, reasonable work function. It has attracted considerable attention due to its excellent electrical and optical properties with its distinct properties has become the potential candidate for many applications [1-3]. ZnS layers were electrodeposited from an aqueous electrolyte containing 0.3 M ZnCl2 and 0.03 M (NH4)2S2O3 in 800 mL of de-ionized water. Electropurification of the ZnCl2 was carried out for 48 h prior to the addition of (NH4)2S2O3in order to remove any possible impurity ions present in the solution. Finally, the pH of the electrolyte containing both precursors was adjusted to 3.00 ± 0.02. The temperature of the electrolyte was 30°C. Uniform and transparent ZnS layers were cathodically deposited on cleaned glass/İTO substrates using a simple two-electrode deposition system at a cathodic potential of 1550 mV established using a cyclic voltammogram. The deposited layers using an average deposition current density of ~65 μA•cm−2 and deposition time of 60 min have thickness of ~150 nm. These were then annealed in air at 350 °C for 10 min. Prior to the deposition of Cu2ZnSnS4, the glass/İTO/ZnS substrates were cleaned with methanol and deionised water. The deposition of Cu2ZnSnS4 layers was also done using a two-electrode system at a cathodic deposition potential of 1450 mV also established using a cyclic voltammogram. The Cu2ZnSnS4 deposited on glass/İTO had a thickness ~300 nm while that deposited on glass/İTO/ZnS had a thickness ~150 nm. This therefore brings the total thickness of the ZnS/Cu2ZnSnS4 bi-layer to ~250 nm comparable to the ~300 nm of Cu2ZnSnS4 grown on glass/İTO. The CdTe deposition electrolyte contained 1 M CdSO4 (99.0%) and 1 mM TeO2 (99.999%) in 800 mL of de-ionized water. To do this, a cyclic voltammogram was recorded using the two-electrode system, to determine the reduction potential of Cd2+. The TeO2 was first dissolved in H2SO4 and then added into the bath after the electro-purification of CdSO4, and the pH of the electrolyte adjusted to 2.00 ± 0.02. After depositing and characterizing few CdTe samples on glass/İTO substrates, the final cathodic deposition potential for CdTe was taken as 2038 mV. CdTe thin layers with thickness of ~1.70 μm were then deposited on annealed glass/İTO/CdS and glass/İTO/ZnS/CdS substrates previously cleaned with methanol and de-ionised water. Typical deposition time for the CdTe used in this work was 4 h, with an average deposition current density of ~176 μA•cm−2. To complete the solar cell fabrication, the annealed glass/İTO/Cu2ZnSnS4/p-CdTe 2-layer structure and glass/İTO/n-ZnS/n-Cu2ZnSnS4/p-CdTe 3-layer structure were etched for 5 s in aqueous solution of 1.0 g of K2Cr2O7 acidified with 10 mL of dilute H2SO4 in 10 mL of deionised water, rinsed in deionized water and then etched in a warm solution containing 0.5 g each of NaOH and Na2S2O3 in 50 mL of deionised water for 2 min. The thickness of the gold contacts was ~100 nm each with a diameter of 2 mm. This makes ZnS a suitable candidate for use as effective buffer/window layer in CdTe-based multilayer graded bandgap solar cells.It is important to note what happens to the ZnS/Cu2ZnSnS4/CdTe structure in the annealing process. The glass/ITO/ZnS/Cu2ZnSnS4/CdTe/In solar cell is also similar to the glass/ITO/ZnS/Cu2ZnSnS4/CdTe/In counterpart in structure and is used as a control experiment in this work to compare the advantages of the architecture with ZnS as wide bandgap buffer/window layer. The result of using ZnS as the buffer/window layer is directly reflected in the improved high short-circuit current density (Jsc) as well as improved open-circuit voltage (Voc), fill factor (FF) and ultimately, the conversion efficiency (η) of the 3-layer device, are compared to the device. However, to ensure that the observed high Jsc values are genuine, the diodes producing them were isolated by carefully removing the CdTe material around them and repeating the I-V measurements. It is therefore possible in these solar cells for photons with energy lower than the energy bandgap of CdTe to create useful electron-hole pairs that contribute to photo-generated current Keywords:solar cells, 3-layer device

    Time:

    Title: Semiconductor Nanowires: Engineering Light at Nanoscale

    Simarjeet Singh Saini
    University of Waterloo, Canada

    Biography
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    Biography

    Simarjeet Singh Saini
    University of Waterloo, Canada

    Simarjeet Singh Saini is an Associate Professor at University of Waterloo in the Department of Electrical and Computer Engineering. He is also the co-founder and Chief Scientific Officer for Savormetrics Inc., a start up company developing low cost optical solutions for determining quality of food. Further, he is the co-founder and Chief Technology Officer for Nanolytix Inc., a start up company developing optical sensors for water quality measurements. He has a Doctorate from the University of Maryland and a B.Tech (Hons.) from the Indian Institute of Technology, Kharagpur. He has published over 200 papers in areas involving photonics integrated circuits, semiconductor nanowires, optical biochemical sensors and high power lasers.



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    Abstract

    Simarjeet Singh Saini
    University of Waterloo, Canada

    Semiconductor nanowires funnel light at certain wavelengths due to resonant excitation of optical modes. This results in enhanced optical absorption which can be used to engineer exciting optical properties. In this talk, we will describe the various optical properties that arise from the resonant excitation by comparing experimental optical absorption studies in different semiconductors including silicon, amorphous silicon and gallium arsenide. We will also demonstrate novel devices using these optical properties including multispectral absorption, biochemical sensors, enhanced photo thermal conversions and resonant conversion of amorphous silicon into crystalline silicon. We will show that the resonant wavelengths depend nearly linearly on the diameter of the nanowires. Further, near field coupling between nanowire in an array result in excitation of photonic Bloch modes resulting in red shifting of the resonant wavelengths from the waveguide modes. We will also show nanowires as short as 150 nm exhibit optical mode excitation and strong longitudinal modes. These optical properties can be used to generate exciting new applications and we will demonstrate optical biochemical sensors with a refractive sensitivity of 1E-5 using low cost LEDs for excitation and a camera as a detector. We will also demonstrate a platform for colorful solar cells where certain wavelengths are reflected to generate the color but overall absorption is nearly doubled with respect to a thin film solar cell. Semiconductor nanowires provide an exciting platform for engineering different optical absorption profiles.

  • Keynote Speaker

    Time:

    Title

    Title: From Cell Cities to Naked Apes to String Controlled Mass-Social Humans: T-Patterns and Self-Similarity over Nine Orders of Magnitude of Time and Space

    Magnus S Magnusson
    University of Iceland, Iceland
    Biography
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    Biography

    Magnus S Magnusson, PHD, Research Professor, created the T-pattern model with detection algorithms (THEMETM, PatternVision). Co-directed a two-year DNA analysis project. Numerous papers and invited talks and keynotes at conferences within ethology, mathematical sciences, neuroscience, bioinformatics, proteomics, mass spectroscopy and at leading universities in Europe, Japan and the US. Deputy Director 1983-1988 in the Museum of Mankind, National Museum of Natural History, Paris. 1988 to 1993 invited Professor at the University of Paris (V, VIII & XIII) in Psychology and Ethology (biology of behavior). Since 1991 founder and director of the Human Behavior Laboratory, University of Iceland, leading member of a formalized network of 32 universities based on “Magnusson’s analytical model” initiated at the University of Paris V, Sorbonne, Paris, in 1995.



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    Sessions:
    Nanobiotechnology & Nanomedicine, Nanofabrication & Material for Energy conversions and storage session & Fullerenes, Carbon Nanotubes & Graphene and other 2D materials & Advanced Materials

    Time:

    Title: Carbon Nanoribbons: Tuned Electronic Properties by Bottom-up Synthesis

    Pierangelo Groening
    Swiss Federal Laboratories for Materials Science and Research, Switzerland

    Biography
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    Biography

    Pierangelo Groening
    Swiss Federal Laboratories for Materials Science and Research, Switzerland

    Pierangelo Groning joined Brown Boveri Company, after he got his master degree in Elec-trical Engineering in 1981, where he developed high power electronic converters for railways. After five years in the industry he went back to academia and studied Physics at the Univer-sity of Fribourg (CH), where he obtained his PhD in Solid State Physics in 1993. From 1993 to 2002 he was Staff Scientist and Lecturer at the University of Fribourg (CH). In 2002 he joined the Swiss Federal Institute for Material Science and Technology (Empa). Since 2006 Dr. Groning is head of the Department Advanced Materials and Surfaces, director of the strategic research focus area Nanostructured Materials and member of the board of direc-tors at Empa.



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    Abstract

    Pierangelo Groening
    Swiss Federal Laboratories for Materials Science and Research, Switzerland

    The development of carbon based nanoelectronics has been an important research goal ever since the discovery of carbon nanotubes (CNT) in 1991 and was boosted even more by the isolation of graphene in 2004. For digital electronics the biggest hurdle is the lack of control in the atomically precise synthe-sis of these carbon nanomaterials.For pure carbon nanotubes the chiralitydetermines the electronic properties (metallic vs. semiconducting) and isomerically pure single walled carbon nanotubes (SWCNTs) of a specific chirality are thus needed to fully exploit their technological potential. The situation is similar for graphene. Graphene is a semimetal and not a semiconductor. The lack of the electronic band gap makes it impossible to build a field effect transistor with a well-defined off-state. Theory predicts that graphene tailored into nanometer-wide ribbons, termed graphene nanoribbons (GNRs), gives rise to electronic properties that differ strongly from those of the semi-metallic parent material. These properties include sizable electronic band gaps due to quantum confinement and edge effects, as well as the spatial separation of spin channels due to spin-polarized edge states in zigzag GNRs. To preserve the outstanding electronic transport properties of graphene in the GNR the whole structure including the edges of the GNR has to be free from atomically defects. We have developed a simple method for the production of atomically precise GNRs of different topologies and widths, which uses surface-assisted coupling of molecular precursors into linear polyphenylenes and their subsequent cyclodehydrogenation. The topology, width and edge periphery of the GNRs are defined by the structure of the precursor monomers, which gives access to a wide range of different GNRs with particular electronic properties.

    Time:

    Title: Low Cost Batch Fabrication of High Aspect Ratio and Edge AFM Tips

    Bo Cui
    University of Waterloo, Canada

    Biography
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    Biography

    Bo Cui
    University of Waterloo, Canada

    Prof. Bo Cui received PhD from Princeton University. In 2008 he joined the University of Waterloo as a professor. He currently leads the Waterloo Nanofabrication Group with 18 graduate students/postdocs. His research focus on nanofabrication technologies and its applications. In particular, his research in special AFM probe fabrication has led to two startup companies (Nanodevice Solutions Inc., and TZNano).He is the recipient of the Dobbin Scholarship. He authored95 peer reviewed journal publications, 6 patents, three book chapters, and one book titled Recent advances in nanofabrication techniques and applications. He is the Associate Editor for Nanoscale Research Letters.



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    Abstract

    Bo Cui
    University of Waterloo, Canada

    A serious issue with AFM is the intrinsic artifact in the AFM image when mapping a non-flat surface (e.g. a deep and narrow hole/trench).The natural solution to overcome this issue is by using thin and high aspect ratio (HAR) tips that can follow the sample surface more precisely. At present, commercial HAR tips are mostly fabricated by the very slow and costly FIB sharpening process, and the very high price greatly limits its wide-spread application. Here we will report a batch fabrication process, which can process an entire wafer of regular (low aspect ratio, low cost) tips into HAR ones, without using any lithography method. A second issue is the tip location relative to the cantilever. Because of alignment accuracy in photolithography, most commercial AFM probes have tips 10-30 �m away from the very end of the cantilever, and it is thus impossible to know where exactly the tip is because the camera in an AFM system shows only the backside of the AFM cantilever. So the initial scanning area must be set very large in order to ensure that the area of interest is within the scanning field. It is therefore very desirable for the tip to be located at the very end of the cantilever so that it can be viewed clearly by the optical microscope of the AFM system. Here we will report a low-cost batch fabrication method to produce such edge tip where the tip is located at the very end of the cantilever.

    Time:

    Title: Targeted Drug Delivery to Solid Tumours Using Porous Silicon Nanoparticles

    Nicolas H Voelcker
    Melbourne Centre for Nanofabrication, Australia

    Biography
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    Biography

    Nicolas H Voelcker
    Melbourne Centre for Nanofabrication, Australia

    Professor Nicolas Voelcker is the Scientific Director of the Melbourne Centre for Nanofabrication, Professor at the Monash Institute of Pharmaceutical Sciences at Monash University and Science Leader at the Commonwealth Scientific and Industrial Research Organisation (CSIRO).His key research interest lies in the fabrication and surface modification of porous semiconductor materials for applications in biosensors, biochips, biomaterials and drug delivery. A core research activity in his laboratory is the study of porous silicon based nanostructures and their surface chemistry. A current focus is the development of new nanostructured materials for biosensors, biochips, biomaterials and drug delivery. He has authored over 330 peer-reviewed journal articles with over 7000 citations.



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    Nicolas H Voelcker
    Melbourne Centre for Nanofabrication, Australia

    Targeted approaches to deliver anti-cancer drugs have the potential to achieve improved efficacy and at the same time reduced side effects. In fact, this is one of the cornerstones of nanomedicine. We are exploring the use of high porosity biodegradable porous silicon and genetically engineered biosilica nanoparticles that are loaded with chemotherapy drugs or siRNA and also display on the particles periphery targeting moieties such as cell-surface antibodies recognising cognate ligands highly expressed on the surface of tumour cells. One approach centers around porous silicon nanodiscs. The process relies on a combination of colloidal lithography and metal-assisted chemical etching. Height and diameter of the pSinanodiscs can be easily adjusted. The nanodiscs are degradable in physiological milieu and are non-toxic to mammalian cells. In order to highlight the potential of the pSinanodiscs in drug delivery, we carried out an in vitro investigation which involved loading of nanodiscs with the anti-cancer agent camptothecin and functionalization of the nanodisc periphery with an antibody that targets receptors on the surface of neuroblastoma cells. The thus prepared nanocarriers were found to selectively attach to and kill cancer cells. In a second approach, we used natural nanoporousbiosilica from the diatom Thalassiosirapseudonana. The biosilica was genetically engineered to display GB1, an IgG binding domain of protein G, on the biosilica surface, which allowed for the attachment of cancer cell targeting antibodies and the adsorption of nanoparticles loaded with anti-cancer drugs. In a final approach, we engineered porous silicon nanoparticles to deliver siRNA to successfully downregulate drug transporter proteins in tumour cells.

    Time:

    Title: Pseudocapacitance Assisted Li and Na Ion Storage in Transition Metal Oxide Nanostructures

    Vinodkumar Etacheri
    IMDEA Materials Institute, Spain

    Biography
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    Biography

    Vinodkumar Etacheri
    IMDEA Materials Institute, Spain

    Dr. Vinodkumar Etacheri is a scientist and electrochemistry group leader at IMDEA Materials Institute, Spain. Dr. Etacheri obtained his PhD in Materials Chemistry from Dublin Institute of Technology (DIT), Ireland in 2011. He then completed postdoctoral research at Bar Ilan University- Israel, University of Michigan- USA and Purdue University USA in the area of Li-ion, Li-O2, Li-S, and Na-ion batteries. His research areas extend from solar energy conversion to electrochemical energy storage materials and devices. He co-authored more than 25 papers (> 3700 citations) in international peer reviewed journals, 3 book chapters, and 8 patents.



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    Abstract

    Vinodkumar Etacheri
    IMDEA Materials Institute, Spain

    Development of safer and environmental friendly high energy density rechargeable batteries capable of fast charging and long-term cycling stability is one of the key challenges for modern electrochemistry. During the last two decades, Li-ion battery technology attracted extensive attention due to their widespread application in portable electronics, medical implants, grid-level energy storage and electric vehicles. Recently, secondary Na-ion batteries emerged as a promising candidate for large scale energy storage. This technology attracted immense interest due to low-cost and abundance of resources compared to limited lithium supply. Despite of the several advantages of Li and Na-ion batteries, their energy and power densities are not sufficient for more energy demanding commercial applications such as long-range driving. Pseudocapacitive charge storage is lately demonstrated as a method to improve the power-density of transition metal carbides (MXenes). However this method is difficult to achieve in case of transition metal oxide electrodes due to their low ionic and electronic conductivity. Tailored designing of these electrode materials are therefore required to induce pseudocapacitive Li and Na ion storage. We have demonstrated pseudocapacitive assisted Li and Na ion storage in ultrathin Co3O4 nanosheets, hierarchical Co3O4 nanorods, biphasic TiO2 nanosheets and CoO-RGO hybrid electrodes. In the case of Co3O4 based anodes, a maximum Li and Na ion storage capacity of 1400 and 700 mAh/g respectively was obtained (300 mAh/g for biphasic TiO2 nanosheets). Excellent specific capacity (higher than theoretical limit), rate performance and cycling stability are attributed to pseudocapacitive contribution resulting from tailored interfaces, defects and crystal facets.

    Time:

    Title: The Significance of Nanotechnologies in Energy Conversion and Storage Technologies

    Soren Linderoth
    Technical University of Denmark, Denmark

    Biography
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    Biography

    Soren Linderoth
    Technical University of Denmark, Denmark

    Soren Linderoth is the head of the department of Energy Conversion and Storage (DTU Energy) at Technical University of Denmark (DTU) since 2012. He is the professor in functional ceramics for energy purposes. He is the Co-author of more than 200 scientific articles, and 30 patents. Prime research activities in the past years have been on solid oxide fuel cells, electrolysis, thermoelectric materials and generators, and magneto-caloric cooling and heating.



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    Soren Linderoth
    Technical University of Denmark, Denmark

    Energy conversion and storage technologies relies in most aspects on proper design and application of various nanotechnologies. In this presentation, examples of the importance of nanotechnologies in areas of fuels cells, electrolysis, batteries and thermoelectric generators, will be presented and discussed. The nanotechnologies in play are e.g. nanostructured electrodes manufactured by impregnation, buffer layers manufactured e.g. by pulsed laser deposition (PLD), electrolytes by e.g. PLD and sputtering, protective coatings and current collecting layers manufactured by e.g. electroplating, and nanostructured maintained during sintering by plasma sintering.

    Time:

    Title: Switching Iron-Based Superconductivity with Spin Currents

    Jhinhwan Lee
    Korea Advanced Institute of Science and Technology, Republic of Korea

    Biography
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    Biography

    Jhinhwan Lee
    Korea Advanced Institute of Science and Technology, Republic of Korea

    Prof. Jhinhwan Lee grew up in Republic of Korea and received his Bachelor’s degree from Seoul National University in 1995. After he obtained his Ph.D. degree from Seoul National University in 2002, he joined Professor J. C. Davis’ Laboratory at Cornell University as a Postdoctoral Associate in 2004 and was appointed Research Associate in 2007. Jhinhwan Lee went to Korea Advanced Institute of Science and Technology as Assistant Professor in 2009 and began his life-long investigations on magnetism and unconventional superconductivity. He was awarded withBombee Physics Award in 2004 and Albert Nelson Marquis Lifetime Achievement Award in 2018.



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    Abstract

    Jhinhwan Lee
    Korea Advanced Institute of Science and Technology, Republic of Korea

    We have explored a new mechanism for switching magnetism and superconductivity in a magnetically frustrated iron-based superconductor using spin-polarized scanning tunneling microscopy (SPSTM) [1]. Our SPSTM study on single crystal Sr2VO3FeAs made of alternating self-assembled FeAs monolayer and Sr2VO3 bilayers shows that a spin-polarized tunneling current can switch the FeAs-layer magnetism into a non-trivial C4 (2×2) order, which cannot be achieved by thermal excitation with unpolarized current. Our tunneling spectroscopy study shows that the induced C4 (2×2) order has characteristics of plaquette antiferromagnetic order in the Fe layer and strongly suppresses superconductivity. Also, thermal agitation beyond the bulk Fe spin ordering temperature erases the C4 state. These results suggest a new possibility of switching local superconductivity by changing the symmetry of magnetic order with spin-polarized and unpolarized tunneling currents in iron-based superconductors [2].We also performed high-resolution quasiparticle interference (QPI) measurements, self-consistent BCS-theory-based QPI simulations and a detailed e-ph coupling analysis to provide direct atomic-scale proofs of enhancement of iron-based superconductivity due to the BCS mechanism based on forward-scattering interfacial phonons [3]. [1] J.-O. Jung et al., Rev. Sci. Instrum. 88, 103702 (2017) [2] S. Choi et al., Phys. Rev. Lett. 119, 227001 (2017) [3] S. Choi et al., Phys. Rev. Lett. 119, 107003 (2017)

    Time:

    Title: Physical, Chemical and Mechanical Properties of Aesthetic Materials Used for Manufacturing Monolithic Crowns via CAD/CAM

    Francesco Saverio Ludovichetti
    University of Padova, Italy

    Biography
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    Biography

    Francesco Saverio Ludovichetti
    University of Padova, Italy

    Francesco Saverio Ludovichetti was born in Padova in 1988 and graduated in dentistry in 2013 at the Padova University. In 2015 he started his "tri-lateral" international PhD in material engineering and dental material at the Universities of So Paolo (UNESP), Amsterdam (ACTA) and Padova (UNIPD). He has a specialization in Periodontics. Nowadays, he is one among the youngest Adjunct Professor at the UNIPD, he is working in his dental offices and his research line is about biomaterials in the oral environment. Speaker at national and international events, Visiting Researcher at the ACTA University (Amsterdam) and Visiting Professor at the Unievangelica University (Brasil).



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    Abstract

    Francesco Saverio Ludovichetti
    University of Padova, Italy

    The increasing interest for aesthetics in dental prosthesis has led to an increased use and research of biomaterials that mimic as much as possible the natural teeth behavior, both from the functional point of view and from the aesthetic one. The modern CAD/CAM technology is rapidly growing up, and with it a lot of brand new materials are being proposed on the market. CAD/CAM blocs are being made of almost all the materials that are available for dental ceramics. Materials such as E-Max Cad (Ivoclar), Suprinity (VITA), Enamic (VITA), Lava Ultimate (3Mespe) and Lava Plus (3Mespe) are nowadays the most used in dental practice, and a little confusion may occur when comes the time to choose one of them with a specific aim. All of them present very good aesthetic characteristics, but they are pretty different concerning the mechanical, chemical and physical properties. Although the producer recommendation, there is a necessity in the literature to clarify the aesthetic, mechanical and physical properties of these CAD/CAM materials. Here we present the differences in chemical composition and mechanical behavior of these new biomaterials used for daily dental practice

    Time:

    Title: Dense Carbon Organic Frameworks for Energy Storage

    Choong-Shik Yoo
    Washington State University, USA

    Biography
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    Biography

    Choong-Shik Yoo
    Washington State University, USA

    Dr. Choong-Shik Yoo is Professor of Department of Chemistry, Institute for Shock Physics and Materials Science and Engineering at Washington State University. He received his PhD in Physical Chemistry in 1986 from UCLA and worked at Lawrence Livermore National Laboratory for twenty years prior to his current position at WSU. His research area of current interest is high-pressure materials chemistry to discover and develop carbon-based low dimensional structures, novel hybrid materials, high energy density materials, and superhard materials, utilizing diamond anvil cells, various laser spectroscopic methods, and novel X-ray diffraction and X-ray spectroscopy at third-generation synchrotron facilities.



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    Abstract

    Choong-Shik Yoo
    Washington State University, USA

    The application of high pressure and high temperature can facilitate the formation of new chemical bonds between two grossly mismatched lattices or dissimilar chemical species in solid states. Furthermore, the properties of solids are, to a first approximation, controlled by the interatomic distance and arrangement (or structure), which can be tuned precisely and substantially by the pressure, analogous to the composition in molecular alloys. The expected properties of these extended alloys are, therefore, similar in their novelty to single-component low Z extended solids, yet they can be tuned chemically by varying the composition, adding chemical impurities, or using specific structural templates. These chemical concepts can be used to control the bonding, structure, stability, and properties of dense extended solids made from low Z elemental mixtures. In this paper, we will describe our recent research efforts aimed at the development of dense carbon-based low Z organic framework (deCOF) structures with unique superconducting, optical and chemical energy storage properties. The specific examples of deCOF materials to be discussed will include solid hydrogen intercalated graphite and carbon dioxide storage in porous nanodiamond.

    Time:

    Title: Green and Rapid Synthesis of Size Controlled TiO2 Nanoparticles Used as Fillers in Light Curing Dental Nanocomposite Resins

    Suhas Pednekar
    Ramnarain Ruia College, India

    Biography
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    Biography

    Suhas Pednekar
    Ramnarain Ruia College, India



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    Abstract

    Suhas Pednekar
    Ramnarain Ruia College, India

    Silver amalgam has been used as a restorative material for the replacement of the decayed tooth structure for more than 150 years. The routine use of dental amalgam is gradually decreasing due to poor aesthetics for anterior restoration, mercury toxicity, and environmental consideration arising from mercury disposal, potential dental fracture, secondary caries, and marginal leakage. Physical properties of dental composites rely greatly on the particle size and filler volume. The hardness, compressive strength, elastic modulus and flexural strength etc increase while the polymerization shrinkage decreases as filler volume fraction increases. In the last few years, the nanotechnology has played an important role in improving the clinical performance of dental resin composites. It deals with chemical and physical methods to produce nanoscale operational materials ranging in the size from 0.1 to 100 nm. Nanocomposites contain filler particles with sizes in nano and micrometers i.e. hybrid in nature, are claimed to provide increased aesthetics, physical strength and durability. In order to improve mechanical properties of composites the surface of hybrid TiO2 nanoparticles was modified with coupling agent. The aim of our work is to synthesize titanium nanoparticles in a green and rapid way to be used as fillers in hybrid form. These are modified with coupling agent APTES (3-Aminopropyltriethoxysilane) and combined with organic matrix to get dental restorative nanocomposite material by using light curing method. Citrus limon fruit peel extract was used as solvent for the synthesis of NPs. The surface modification of green synthesized hybrid TiO2 nanoparticles plays an important role to build up physical adhesion and covalent linkage of inorganic fillers and resin matrix. APTES is a universally used coupling agent that is responsible to protect fillers against fracture, to improve distribution and stress transfer from flexible organic matrix to stiffer and stronger inorganic filler particles. It also decreases water intake capacity of composites and minimizes wear. In addition, C=C functional group in APTES modified hybrid TiO2 takes part in polymerization process while curing. The result shows that an increase in filler content increases the mechanical properties of resin material significantly such as compressive strength, flexural strength, and elastic modulus etc. Polymerization shrinkage decreases when compared with the resin material with no filler content. These results are compared with the light curing resins available in the market and show enhancement in dental properties after addition of fillers. TiO2 are white in color, self-cleaning, and antimicrobial in nature. The development of such biocompatible materials in the field of restorative dentistry having aesthetic and antimicrobial properties has great potential for treating tooth decay and its prevention.

    Time:

    Title: Aggregation Structure and Properties of Some Molecule Materials

    Yuliang Li
    Chinese Academy of Sciences, China

    Biography
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    Biography

    Yuliang Li
    Chinese Academy of Sciences, China

    Yuliang Li is a Professor at the Institute of Chemistry, Chinese Academy of Sciences. He has published more than 600 peer reviewed scientific articles and invited reviews in the journals, such asNat. Commun.、Acc. Chem. Res., Chem. Soc. Rev., J. Am. Chem. Soc., Angew. Chem. Int. Ed., PNASandAdv. Mater.et al..His research interests lie in the fields on design and synthesis of functional molecules, self-assembly methodologies of low dimension and large size molecular aggregations structures, chemistry of carbon and rich carbon, with particular focus on the design and synthesis of photo-, electro-active molecular heterojuction materials and nanoscale and nano-structural materials



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    Abstract

    Yuliang Li
    Chinese Academy of Sciences, China

    Molecular material aggregation structure is an important research direction in the development of material science, especially the development of two-dimensional molecular aggregated structure materials and heterostructure materials, understand the fundamental problems of aggregated structures in the optical, electrical, energy and catalytic fields and potential applications, represents the development trend of chemistry based the disciplinary scientific field. We mainly discuss some scientific problems in this field and the establishment of a series of molecular self-assembly and self- organization method using some basic concepts, combined with the molecular structure and growth characteristics, structure and energy matching principle. The controllable the aggregated structure of molecular materials from one dimension to two dimensions is realized. The properties in optical, electrical, energy and photoelectrical properties were also studied.

    Time:

    Title: NanoBioMedicine: Current Technology, Challenges and Future Directions

    Sonia Trigueros
    Oxford University, Uk

    Biography
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    Biography

    Sonia Trigueros
    Oxford University, Uk

    Sonia Trigueros group focuses on the design of novel nano drug and gene delivery system to target specific cell. Her groups is also developing new Nanomedicines to tackle bacterial antibiotic resistance problem. She has a PhD in molecular biology from IBMB-CSIC and Universidad de Barcelona. After her postdoctoral research fellowships at Harvard and Oxford Universities, Trigueros was a research visitor to several academic institutions including NIH-Washington and Havana University. She is currently an Associated Researcher at the Zoology Department and Academic visitor at the Physics Department and Co-director of the Oxford Martin Programme on Nanotechnology: NanoMedicine at University of Oxford.



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    Sonia Trigueros
    Oxford University, Uk

    Nanotechnology is a new exciting field that has the potential to transform the way that medical and healthcare solutions are being developing. At the Oxford Physics Department we research on the newest techniques and materials at the nanoscale level. We apply this knowledge directly first to learn the relevant biology at the single molecule level and then to utilize the science and the technology to solve the most pressing medical problems of the 21st century. The talk will be focus on our latest projects from basic research to potential Medical applications.

    Time:

    Title: Production of Zinc Oxide Scaffolds by Supercritical CO2 Processing

    Sudhir Kumar Sharma
    New York University Abu Dhabi, UAE

    Biography
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    Biography

    Sudhir Kumar Sharma
    New York University Abu Dhabi, UAE

    Sudhir Kumar Sharma obtained masters (M.Sc. Physics and M.Tech. Materials) from Department of Physics, Barkatullah University (formerly Bhopal University) Bhopal, India. In 2012, he received his PhD from the Indian Institute of Science Bangalore, India. As post doc fellow, he joined at Centre for Nano Science and Engineering (CeNSE), IISc. Bangalore, India. Afterwords Dr. Sharma moved to New York University Abu Dhabi UAE (NYU Abu Dhabi) as a research associate in Nov. 2013. Currently, he is working as a Research Scientist at NYU Abu Dhabi. His publication record includes around 30 publications in international peer-reviewed reputed journals and more than 50 presentations in conferences. His research interest includes implementation of supercritical technologies for nanoparticle synthesis, Smart materials for micro-sensors and actuators, MEMS/NEMS and micro/nano-fabrications, vacuum science, and thin film technology.



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    Abstract

    Sudhir Kumar Sharma
    New York University Abu Dhabi, UAE

    The implementation of supercritical fluids has received a tremendous interest from the scientific community with the aim to upgrade the traditional technologies as well as to develop new technologies for the production of smart materials. The characteristics of smart materials at micro-nano scale are closely associated with their chemical composition as well as to their particle size. The production of such materials with specific properties is very important for numerous applications in catalysts, coatings, electronics, ceramics, superconductors, dyestuff, pigments, and pharmaceuticals. We report a novel method for the fabrication of porous zinc oxide scaffolds by a scalable supercritical CO2 (sc-CO2) based nebulization process, under mild processing conditions (P= 145 bar; T = 110o C)[1�3]. This process consists of evaporation of CO2 enriched water micro-droplets (~ 3m diameter) deposited from an aerosol onto heated substrates at 135  5C followed through coffee-ring effect. We produced hierarchically porous ZnO scaffolds with polycrystalline hexagonal wurtzite structure and space group of C46V (P63mc). Photoluminescence emission (PLE) characteristics of as deposited scaffolds showed sharp NBE blue emissions whereas and post heat treated to 400o C enhancement in the PL intensity with conventional green luminescence. We explored the feasibility of this process to produce zinc oxide scaffolds and utilize for potential applications in diverse fields of nanotechnology.

    Time:

    Title: A Novel Nano-Formulation Rich in α-Eleostearic Acid Mitigates Molecular Parameters Aggravated by Hyper-Sensitizing Allergens: Focus on Translational Research

    Debjyoti Paul
    University of Calcutta, India

    Biography
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    Biography

    Debjyoti Paul
    University of Calcutta, India

    Dr. Debjyoti Paul, is presently a post-doc in the laboratory of Sr. Professor Parimal Chandra Sen, Molecular Medicine division of the Bose Institute, Centenary Campus, located in Kolkata, India. Dr. Paul did his Ph.D. from the University of Calcutta in nano-formulations of therapeutic conjugated linolenic acid isomer, and has provided one of the earliest evidences of such lipids as nano-systems in ameliorating bio-molecular parameters against, diabetes, pathogenic mitogens and allergens. He has also been a pioneer in putting forward a stable formulation system to emulsify such PUFAs for clinical applications that can be nano-sized without leading to the formation of undesirable lipid-artifacts. His present focus is in developing nano-carriers to deliver novel drugs against mi-RNAs associated with Triple Negative Breast Cancer Cells.



    Abstract
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    Abstract

    Debjyoti Paul
    University of Calcutta, India

    Background: Empirical evidences to establish the higher bio-functionality of therapeutic lipids of nano-templated systems are starkly lacking. In this context, this work presents encouraging real-time findings against both in vivo and ex vivo inflammation models for a therapeutic lipid, alpha-eleostearic acid (ESA), encapsulated in a novel and thoroughly characterized bio-compatible nano-emulsion (NE) system (particle sizes less than 200 nm). Methods: A protocol involving high pressure homogenizer was developed to fabricate novel formulations of ESA and was characterized with standardized methods of DLS and TEM. Molecular biological tools and assays were employed to arrive at a definite conclusion. Results: Among the treated experimental groups, the pro-inflammatory profile was found to be significantly mitigated in the hypersensitized rats administered with 0.25% ESA-NE formulation. ESA NE also restored the cell cycle phases of splenocytes to normal conditions and in a more emphatic manner as compared to ESA CE. The short-term effect of the formulations in the isolated human PBMCs challenged with and without lipopolysaccharide (LPS) for cell-surface bio-marker (CD 14, CCR5/CD195) expressions, also revealed novel findings. Conclusion: The novel ESA NE formulation shows lot of palpable promise for clinical applications against pathogenic and delayed type-hypersensitivity.

    Time:

    Title: Graphdiyne for High Capacity and Long-Life Lithium Storage

    Changshui Huang
    Chinese Academy of Sciences, China

    Biography
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    Biography

    Changshui Huang
    Chinese Academy of Sciences, China



    Abstract
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    Abstract

    Changshui Huang
    Chinese Academy of Sciences, China

    Although the Li capacity can be improved greatly with these different dimensionalities and morphologies, the nature of the Li-intercalated layer does not change significantly when compared to graphite. Graphdiyne (GDY) is a new carbon allotrope that was only synthesized recently. GDY is composed of sp2- and sp-hybridized carbon atoms and is predicted to be the most stable of the various diacetylenic non-natural carbon allotropes. Here, we will report the application of GDY as high efficiency lithium storage materials and elucidate the method of lithium storage in multilayer GDY (Fig 1).[1-3] Lithium-ion batteries featuring GDY-based electrode exhibit excellent electrochemical performance, including high specific capacities, outstanding rate performances, and a long cycle lives. We obtained reversible capacities of up to 901 mAh/g after 400 cycles at a current density of 100 mA/g. At an even higher current density of 2 A/g, cells incorporating GDY-based electrodes retained a high specific capacity of 420mAh/g after 1000 cycles. We hope that designing and preparing novel carbon-based materials with large pores will open up new approaches for the development of Li storage materials exhibiting high capacities and excellent cycling stabilities, thereby satisfying the future requirements of next-generation Li storage batteries. [1] Changshui Huang, Shengliang Zhang, Huibiao Liu, Yongjun Li, Guanglei, Cui, Yuliang Li, Graphdiyne for high capacity and long-life lithium storage. Nano Energy, 11, pp 481-489, 2015. [2] Huiping Du, HuiYang, Changshui Huang*, Jianjiang He, Huibiao Liu, Yuliang Li, Graphdiyne applied for lithium-ion capacitors displaying high power and energy densities. Nano Energy, 22, pp 615-622, 2016. [3] Ning Wang, Jianjiang He, Zeyi Tu, Ze yang, Fuhua Zhao, Xiaodong Li, Changshui Huang*, Kun Wang, Tonggang Jiu, Yuanping Yi and Yuliang Li. Synthesis of Chlorine-substituted Graphdiyne and Its Application for Lithium-ion Storage. Angew. Chem. Int. Ed, 56, pp10740-10745, 2017.

    Time:

    Title: Microfabricated Tools for Biomedical Devices

    Meltem Elitas
    Sabanci University, Turkey

    Biography
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    Biography

    Meltem Elitas
    Sabanci University, Turkey

    Meltem Elitas is a Faculty Member in Mechatronics Program at Sabanci University. Her background is in Electrical and Mechatronics Engineering. She has obtained her Doctorate from Bioengineering and Biotechnology Department at EcolePolytechniqueFederale de Lausanne. She has performed her Postdoctoral studies at Yale University Biomedical Engineering Department. She has published more than 25 papers in reputed journals. Her research interests are surgical tools for robotic surgery, biomechatronics, cellular heterogeneity, cellular interactions, tumor microenvironment, live cell imaging and development of microfabricated tools for quantitative biology.



    Abstract
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    Abstract

    Meltem Elitas
    Sabanci University, Turkey

    Understanding the behavior of cells in a quantitative manner will provide valuable information to reveal the mechanism of diseases, immune defense and development of new treatment reagents and strategies for the diseases. Today one of the biggest limitations relies on the traditional methods and tools that we use to investigate the rare cells and specific events in biology particularly in immunology. Since these techniques are not adequate enough to be selective, specific and quantitative, the rare cells such as the metastatic or drug resistant ones or the events such as onset symptoms of tumors and infections are being masked by majority of the cells or events in the population. Therefore, we cannot diagnosis on time or provide successful strategies. As a consequence, our approaches might not target the right cells at the right time in the right place. To overcome these limitations, we might profit from engineering approaches and tools. We can develop quantitative, accurate, reproducible and precise methods and use microfabricated tools to understand the nature and behavior of rare cells and events. The improvements from microfabricated tools in conjunction with microscopy might provide statistics from large numbers of single cells, short assay time, less sample consumption, less waste production, quantitative and reproducible data, single-cell resolution images, high-throughput, spatio-temporal tracking and real-time assays, etc. This talk will present recently developed microfabricated tools to understand the immune cell-tumor cell interactions. I will present our microfluidic applications and their preliminary data from my research group.

    Time:

    Title: XPS Investigation of MoS2 Transistor Structures Under Operating Conditions (Operando XPS)

    Sefik Suzer
    Bilkent University, Turkey

    Biography
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    Biography

    Sefik Suzer
    Bilkent University, Turkey



    Abstract
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    Abstract

    Sefik Suzer
    Bilkent University, Turkey

    MoS2 is very promising channel material for next generation complementary metal-oxide-semiconductor (CMOS) applications, and others. However, very little is understood about functioning and/or the role of the ultra-thin MoS2 films, in terms of chemical nature, morphology, defect structure, etc. In this presentation utilization of X-ray photoelectron spectrscopy (XPS), a popular chemical analysis tool, for investigation of electrical potential distribution across and within the device will be given. The device consists of two gold metal electrodes in the source-drain geometry, and has a ~200 μm MoS2 channel in between, all fabricated on a SiO2/Si dielectric substrate, which is gated through the Si substrate. Variations in the electrical potential distribution are detected by the shifts in the binding energies of the core levels of the corresponding atoms, in a completely non-invasive and chemically specific fashion. Accordingly, the difference in the position of the Au4f peak reflects the potential drop across the two electrodes, while the shifts in the Mo3d, S2p peaks are indicative of the potential variations along the width of the channel, and the shifts in the Si2p are induced by the gate voltage. As a result, it can easily be observed that all of these shifts are completely controlled by both the polarity and also the amplitude of the gate-voltage. This simple variant of XPS enables us to follow/detect/observe many of the electrical properties of the transistor-devices, in addition to giving rich chemical information about them. Methodology and findings will be presented and discussed.

    Time:

    Title: Investigation of ZnS Based Core-Shell Particles: Synthesis Strategies, Properties and Potential Applications

    Anita Sagadevan Ethiraj
    VIT University, India

    Biography
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    Biography

    Anita Sagadevan Ethiraj
    VIT University, India

    Dr. Anita Sagadevan Ethiraj is a first class distinction holder Physics graduate from Pune University. She received her postgraduate and doctoral degree in Physics (specialization in Nanotechnology) from Department of Physics, University of Pune, India. She was a visiting scientist for the year 2005-2007 in the Department of Material Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea. Dr. Anita is a recipient of prestigious Brain Korea (BK 21)-South Korea, NSC-Taiwan and Army Research Lab (ARL), USA sponsored Postdoctoral Research Awards. Presently she is working as an Associate Professor in Center for Nanotechnology Research, VIT University, Tamilnadu, India. She has delivered several Invited talks in National and International Conferences, served as Convenor, National Advisor Committee member, Technical Committee Member and session chairs, holds membership in many professional organizations, reviewer for Elsevier & Springer Publisher journals and has numerous peer reviewed impact factor papers to her credit. Dr. Anitas research area of interest includes quantum dots, bio-nanomaterials, polymer-nanocomposites, functional nanomaterials including low-dimensional electronic materials-graphene for optoelectronic, biosensors, photovoltaic, environmental and energy storage applications.



    Abstract
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    Abstract

    Anita Sagadevan Ethiraj
    VIT University, India

    In recent years with the advancement of nanotechnology the scientific community is in constant search to come up with new material systems which exhibits improved and exceptional properties to be utilized in various potential applications. Core-Shell, also referred as core@shell particles happens to be one such special class of highly functional materials which has unfolded research opportunities in almost every area of science and engineering including medicine, chemistry, electronics, pharmacy, biotechnology etc. Various metals, dielectrics, semiconductors, biomolecules, dyes can be utilized for the preparation of core-shell materials. In addition, new synthesis and fabrication process emerging has made it possible to prepare these nanostructured materials in desired size, shape and morphology with customized properties liked increased surface area, high stability and improved optical, chemical, magnetic properties. Interesting application of core-shell material systems is found in photonic crystals, sensors, fluorescent biological labels, bar codes, catalysis etc. This talk will provide an overview of the development, versatile properties and application of Zinc Sulfide (ZnS) based core-shell particles. ZnS is a well-known direct band gap (Eg-3.68eV) II-VI semiconductor which is one of the widely used metal sulfides with many technological applications. Later some of the interesting work carried out by our research group on ZnS will be presented. Here monodispersed ZnS nanoparticles and their corresponding core-shell particles using different synthesis strategies will be discussed. These core-shell particles are those based on silica either as core or shell. The novel and interesting applications of ZnS based core-shell particles will also be highlighted.

    Time:

    Title: Electrospun Nanostructured Scaffold of Carbon Nanotubes and Hydroxyapatite Composite for Bone Tissue Engineering

    Khalid Parwez
    P.A. College of Engineering, India

    Biography
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    Biography

    Khalid Parwez
    P.A. College of Engineering, India

    Dr. Khalid Parwez, is working as Associate Professor in the department of Biotechnology, P.A. College of Engineering, Mangalore and as guest teacher in the department of Biosciences, Jamia Millia Islamia, New Delhi. He has been teaching undergraduate and post graduate since 2009. His area of research includes Nanomaterial synthesis and characterization, nanocomposite (Advance nanomaterials), Nanomaterials as diagnostic tools and bone tissue engineering. He received PhD degree from Yenepoya University in the department of Allied Health and Basic Sciences in 2015 and Master of Science degree from Manipal University in 2008. He has total 14 research paper published in peer reviewed journals, attended many national and international conferences, given invited talk, received Young Scientist award from state government for the year 2015-16. Received a research grant from Govt. of India for three years from 2017-2019 for development of carbon nanotubes based diagnostic kit for Leptospirosis and currently working on it.



    Abstract
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    Abstract

    Khalid Parwez
    P.A. College of Engineering, India

    Large bone defects caused by trauma, tumor resection, deformity, and infections are increasing year by year, but the rare resources for autogenous bone grafts and allograft rejections make it difficult to treat all of these deficiencies. In spite of high request in clinical medicine, natures capability to self-organize the inorganic component with a preferred alignment in the bioorganic matrix is still not reproducible by synthetic techniques because of its complex nature. Therefore, in fields ranging from biology and chemistry to materials science and bioengineering a large developmental effort is essential in order to fabricate bone and dentin-like biocomposite materials, which may permit the ingrowth of hard tissues though improving mechanical properties with respect to the hard tissue regeneration. In recent years, certain attention has been paid to biomimetic approaches, which allow us to mimic such natural bio-inorganic and bio-organic composite materials. The main idea in biomimetic methodologies is to control and fabricate the morphology and composition of developed biomaterials, in which the nano crystallites of inorganic compounds are spread with special orientation in the organic matrices due to its large potential in biomedical applications. In the present work, we successfully mimicked electrospun bio-nanocomposite fibers on the basis of Poly Vinyl Alcohol (PVA) as matrix and Hydroxy Apatite (HA) nanoparticles with a highly anisotropic three-dimensional structure, microscopically the same as a substructure of bone. We have used two-step methodology that combines an in situ coprecipitation synthesis route with electrospinning process to prepare a unique type of biomimetic nanocomposite nanofibers of HA/PVA. The fibers produced by the electrospinning machine were in 100-200 nm .The result obtained from UTM analysis highlights the great tensile strength and youngs modules of the nanofibers. A combination of structural, mechanical and biological properties of bone graft play a critical role in cell seeding, proliferation and new tissue formation in orthopaedic research. Nano-biomaterials should promote cell adhesion and be optimized for ECM production, mineralization and subsequent tissue regeneration. Hence, electrospun biomimetic HA/PVA/CNT nanofibers hold great potential for adhesion, proliferation and mineralization of osteoblasts and are favourable biocomposite scaffolds suitable for bone tissue redevelopment.

    Time:

    Title: Recent Trends of Corrosion Inhibition for Steel Alloys in Different Media

    Reda Abdel Hameed Abdelghany
    Hail University, KSA

    Biography
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    Biography

    Reda Abdel Hameed Abdelghany
    Hail University, KSA

    Reda Abdel Hameed graduated with a degree in chemistry from Al-Azhar University, Cairo, Egypt. He has carried out research projects in applied organic chemistry, physical chemistry, and green chemistry. He has more than 20 years of teaching experience as a lecturer and associate professor in Egypt and the KSA. Reda has more than 43 research papers in various national and international journals. He is currently working as an associate professor of applied Physical Chemistry at Al-Azhar University. The current address Faculty of Science, Hail University, KSA.



    Abstract
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    Abstract

    Reda Abdel Hameed Abdelghany
    Hail University, KSA

    Corrosion control of metals is of technical,economical, environmental, and aesthetical importance.The useof inhibitors is one of the best options of protecting metals and alloys against corrosion. There are intensive efforts underway to develop new corrosion inhibitors for steel in different medium. The environmental toxicity of organic corrosion inhibitors has prompted the search for new corrosion inhibitors which are biodegradable; inexpensive, readily available and renewable. In recent years expired drugs, modified Plastic waste, and Nona composite show real promise. The present review consciously restricts mainly to new trends as corrosion inhibitors for steel in different media.

  • Sessions:
    Materials for Energy and Environment & Environmental Nanotechnology and Nanoscience

    Time:

    Title: Graphene Nanoplatelets Coating for Corrosion Protection of Aluminum Substrate

    Fatima bouanis
    University Paris Est, France

    Biography
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    Biography

    Fatima bouanis
    University Paris Est, France



    Abstract
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    Abstract

    Fatima bouanis
    University Paris Est, France

    In this work, we study the properties of graphene nanoplatelets as an effective anticorrosion coating for aluminum substrate in 0.5 M NaCl at room temperature (25�C). Scanning and transmission electron microscopy and Raman spectroscopy reveal the high quality multilayer graphene nanoplatelets. The modification of the corrosion resistance characteristic were investigated by open circuit potential(OCP), followed by electrochemical tests such as potentiodynamicpolarization (Tafel curves) and electrochemical impedance spectroscopy(EIS). The electrochemical results show that the graphene nanoplateletsprovideseffective resistance againstcorrosive medium.Scanning electron microscopy (SEM), Raman spectroscopy and Energy Dispersive X-ray (EDX) studies carried after immersion in corrosive medium confirm that graphene coated aluminum surface is well protected compared to the uncoated substrate.

    Time:

    Title: Application of Quantum Dots for Colour Improvement of Displays

    Hsueh-Shih Chen
    National Tsing Hua University, Taiwan

    Biography
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    Biography

    Hsueh-Shih Chen
    National Tsing Hua University, Taiwan

    Dr Hsueh-Shih Chen received his PhD in 2009 from the University of Cambridge. Before his study in Cambridge, he worked as a researcher for 5 years at Industrial Technology Research Institute (ITRI) in Taiwan. From 2009 to 2010, he was a special research fellow in the National Institute of Advanced Industrial Science and Technology (AIST) of Japan. In 2012, he was offered a fellowship by the Natural Environment Research Council, and worked as a research fellow at the University of Birmingham in UK. He begins his academic career at National Tsing Hua University, Hsinchu in 2013, as an assistant professor, and then becomes an associate professor in 2015 at the Department of Materials Science and Engineering. He has published more than 80 academic papers and 40 patents and is also a founder of two quantum dot companies.



    Abstract
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    Abstract

    Hsueh-Shih Chen
    National Tsing Hua University, Taiwan

    Quantum dots (QDs) are currently considered to be a solution for future display standards and are being applied to LCD displays for colour improvement. Various application types of QDs in displays are under development, e.g., polymer/QDs thin films, QD light-emitting-diodes (LED), QD color filters and QD electroluminescence devices (QLED), in which the thin film type has been introduced to high-end display products by the main TV brands. Current challenges of the QD-based displays are colour impurity, emission efficiency and thermal stability that still need to be further improved. In this report, we will go through the various application types of QDs in lighting and displays. In particular, the polymer/QDs thin films and QD LEDs will be surveyed and discussed regarding of the narrow emission bands (full-width at half-maximum, fwhm < 30 nm) and thermal stability/reliability.

    Time:

    Title: Nanocatalytic Influence on Polymeric Waste Pyrolysis for Energy Recovery and towards Sustainable Environment

    Poushpi Dwivedi
    Indian Institute of Technology (Banaras Hindu University), India

    Biography
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    Biography

    Poushpi Dwivedi
    Indian Institute of Technology (Banaras Hindu University), India

    Dr. Poushpi Dwivedi is presently DST-SERB ‘National Post-Doctoral Fellow’ (Project File No. PDF/2017/002264), at Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi, India. She obtained her B.Sc. Honours in Chemistry (2001) and M.Sc in Chemistry (2003) from Banaras Hindu University, India; M.Phil. (2009) from Madurai Kamraj University, India; Ph.D. (2015) from Motilal Nehru National Institute of Technology, India. She has worked as ‘Project Fellow’ (2004) and ‘Post-Doctoral Fellow’ (2017) in Department of Chemical Engineering & Technology, I.I.T. (B.H.U.), India; as guest faculty (2016) in Department of Chemistry, University of Allahabad, India. Research interests include: nanotechnology, nanomedicine, nanobiotechnology, green chemistry, analytical-techniques and energy.



    Abstract
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    Abstract

    Poushpi Dwivedi
    Indian Institute of Technology (Banaras Hindu University), India

    Nanostructured catalysts and their exploration provide recommended solutions for challenges regarding cost as well as in the factors influencing overall process optimization, due to their characteristic of high surface area to volume ratio which render outstanding properties with respect to the bulk catalyst. At the same time, increasing urbanization, population together with rise in living standards, have caused polymeric waste affecting the environment a chronic issue globally. Hence forth, the technological approach of nanocatalytic pyrolysis for conversion of polymeric waste into energy products is an alternative waste management and progress towards developing sustainable environment. Pyrolysis of waste polymer materials involves thermal decomposition in absence of air/oxygen, cracking their macromolecules into lower molecular weight ones, resulting the formation of a wide range of products from hydrogen, hydrocarbons to coke. It is also one of the tertiary recycling methods for plastics in accordance with ASTM D5033-00 which has divided plastic recycling methods into four types, based on the final result. In general, the variety of products obtained through pyrolysis can be classified into the non-condensable gas fraction, the liquid fraction consisting possible recovery of gasoline range hydrocarbons (C4-C12), kerosene (C10-C18), diesel (C12-C23), motor oil (C23-C40) and the third fraction of solids. While, nanocatalyzed pyrolysis is a promising solution to low thermal conductivity of polymers, therefore, promoting faster reactions in breaking the C-C bonds at lower temperatures, denoting less energy consumption and enabling increase in the process selectivity, generating higher added value products with increased yield.

    Time:

    Title: Soil Stabilization and the Synthesis and Application of Nanostructured Ash from Biomass and Municipal Solid Wastes for a Green Environmental Geotechnics

    Kennedy C Onyelowe
    Michael Okpara University of Agriculture, Nigeria

    Biography
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    Biography

    Kennedy C Onyelowe
    Michael Okpara University of Agriculture, Nigeria

    I have a PhD degree in Geotechnical Engineering from the University of Nigeria, Nsukka, Nigeria. I have had over 10 years of research and teaching experience at the Michael Okpara University of Agriculture, Umudike, Nigeria. I have over 35 journal and conference articles published in reputable journals across the globe. My research interests are Geotechnical Engineering, Soil Stabilization, Environmental Geotechnics, Transportation Geotechnics, Nano-Geotechnology, Computational Geotechnics, Soil Erosions, etc. I look up to explore new areas, make new contacts and become an internationally recognized academic collaborating with other international fellows in the areas of research, graduate co-advising, and teaching.



    Abstract
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    Abstract

    Kennedy C Onyelowe
    Michael Okpara University of Agriculture, Nigeria

    The application of biomass and municipal solid waste (BMSW) as dust or as amorphous material (ash) in the stabilization of weak and expansive soils used as subgrade materials has been high for many years. Geotechnical experts have relied on the effect of these materials, which are products of the direct combustion of lignocellulosic biomass or the pulverization of same on the geotechnical properties of soils. These ash and dust materials are prepared by direct combustion and UV-Vis spectrophotometric characterization to determine the average particle size of the ash materials. Results achieved through laboratory investigations have shown that the amorphous materials or dusts from these wastes, which included palm bunch ash, palm kernel ash, sugarcane bagasse ash, rice husk ash, snail shell ash, oyster shell dust, periwinkle shell ash, groundnut shell ash, coconut shell ash, etc., have improved the strength, consistency, characterization, gradation, moisture condition value, durability and swelling properties of soils thereby satisfying the materials requirement for use as admixtures, pozzolanas, binders or fillers in subgrade stabilization for pavement construction purposes. These have equally given the disposal of solid waste a boost such that this procedure enhances the efficiency of disposing these municipal solid wastes and making them reusable materials in the rehabilitation of the environment using a more ecofriendly binders with zero carbon emission and consequently reduced contribution to global warming.

    Time:

    Title: Green Synthesis of Magnesium Oxide MgONPs Nanoparticles Using Chamaemelum Nobile Flowers Extract : Effect on Green Peach Aphid

    Alaa y Ghidan
    The University of Jordan, Jordan

    Biography
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    Biography

    Alaa y Ghidan
    The University of Jordan, Jordan

    The presenter Alaa Y. Ghidan , the PhD Candidate at The Jordan University, and she has five publications about the same field of nanotechnology, synthesis as an eco-friendly method.



    Abstract
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    Abstract

    Alaa y Ghidan
    The University of Jordan, Jordan

    Green Synthesis approach to synthesize magnesium oxide (MgONPs) nanoparticles using Chamaemelum nobile flowers aqueous extract in one-pot reaction. The synthesized magnesium hydroxide and oxide nanoparticles were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). Keywords: Green synthesis, Magnesium oxide nanoparticles, Chamaemelum nobile flowers extract.

    Time:

    Title: Nanoparticles for the Decontamination of Water

    M S Latha
    Sree Narayana College Chengannur, India

    Biography
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    Biography

    M S Latha
    Sree Narayana College Chengannur, India



    Abstract
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    Abstract

    M S Latha
    Sree Narayana College Chengannur, India

    Availability of pure water is very essential for sustaining life on earth. Disposal of toxic waste water without proper treatment to the environment, polluted natural water sources leading to scarcity of clean water across the world. Removal of pollutants from wateris one approach to address the problem of water scarcity. Various biosorbents have been investigated for the purpose. We have synthesized nanoparticles of polysaccharides, alginate and cellulose for the removal of Dyes and heavy metals from water. The potential of these nanoparticles for heavy metal and dye removal was studied by batch adsorption technique. The influence of various parameters on biosorption such as pH, initial concentration, contact time, biosorbent amount and temperature was also studied. Repeated adsorption on alginate could bring down the concentration of heavy metals and dyes to the range of potable water. Thermodynamic parameters confirmed the endothermic nature, spontaneity and irreversible nature of the biosorption process. The desorption studies using 0.2 M HCl showed the reusability of the sorbent. Since alginate is known for its antimicrobial activity, the possibility of using it for the removal of microbes from contaminated water was evaluated by taking both gram negative (E.coli) and gram positive bacteria (S.aureus) as indicator organisms. Effect of alginate nanoparticles on cell wall integrity was studied by death rate assay. More than 80% of E.coli cells were killed after an incubation time of 120 minutes whereas only 65 % of S.aureus cells were damaged showing the more sensitive nature of gram negative E.coli for alginate nanoparticles. SDS method showed the rapid reduction of cell wall integrity of gram negative E. coli strain after 30 minutes of incubation while only less than 40% and 70 % loss for S.aureus after 60 and 90 minutes respectively. The result showed that the S.aureus cell wall is more resistant towards alginate. The SEM images of treated sample showed severe damage to the cell wall of E.coli while the effect was not so prominent in the case of gram positive S.aureus. This study demonstrates the potential of using calciumalginate for the effective removal of toxic heavy metals, dyes and microorganisms from contaminated water. Since alginate is a cheap and easily available material, it could be developed as a promising material for the detoxification of waste water.

    Time:

    Title: Nanostructured Carbons as Multifunctional Materials for the Ad-vancement of Energy Storage Application

    Kamal K Kar
    Indian Institute of Technology Kanpur, India

    Biography
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    Biography

    Kamal K Kar
    Indian Institute of Technology Kanpur, India



    Abstract
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    Abstract

    Kamal K Kar
    Indian Institute of Technology Kanpur, India

    Carbon tends to get a bad rap these days, but I think it is amazing material. It plays a huge role in the world we live in, from the carbon dioxide in the air to the graphite in your pencil, to diamond in jewelry, to your body, you ll find its figure print everywhere, just need to open our eyes. In the earth's crust, it is the 15th most abundant element and fourth most abundant universal element by mass after oxygen, hydrogen and helium. Can you believe that there is another carbon material that is stronger than steel, unbreakably elastic, resistant to chemicals and high temperature, a better conductor of electricity than silver, and a better heat conductor than diamond? So, nanotechnologists have been fascinated with potential of this material in all fields starting from aerospace to medical. Currently these carbon powders are incorporated in diverse commercial products ranging from rechargeable batteries, automotive parts, and sporting goods to boat hulls and water filters including supercapacitors, actuators, and lightweight electromagnetic shields. For example, carbon nanotube (CNT) has high stiffness, strength, thermal conductivity, electrical capacity and thermal stability. Even though CNT has excellent mechanical properties, its incorporation in polymer matrices does not necessarily result in dramatically improved composites. The storage modulus of the multiscale composite in polyester matrix as well as the pull out strength of CNT-coated carbon fiber (CF) is improved by as much as 33 and 88%, respectively. Another example the composite of oxidized CNT and polypyrole exhibits a gravimetric capacitance of 305 F g-1 with a gravimetric energy density of 42 W h kg-1 in 5 M KOH (aqueous) electrolyte, which is the highest reported in this study. An area specific capacitance of 376 mF cm-2 in 1 M LiClO4acetonitrilic electrolyte exhibited by the composite of exfoliated graphite nanosheetpoypyrole with an area specific energy density of 209 �Wh cm-2. A volume specific capacitance of 5428 mF cm-3 in 1 M LiClO4acetonitrilic electrolyte exhibited by carbon nanoplate coated CF with a volume specific energy density of 753 �Wh cm-3 is the highest reported among the various supercapacitors (SCs) manufactured in our group. The electrically conducting, highly flexible unidirectioral CF (UCF) exhibits lowest specific gravity when compared to that of various metals and the mass of SCs can be significantly be reduced if UCF is used as current collector. Incandescent bulb filaments, consisting of CNT coated CF (CNTCF), were fabricated and their incandescent properties were studied. For comparison, CF and tungsten filaments were also studied under similar conditions. CNTCF filament of 10 Ω resistance exhibits an illuminance enhanced by a factor of ~ 400 as compared to tungsten filament of 17 Ω resistance for an applied voltage of 18 V. At an input power of 70 W, CNTCF exhibits an enhancement by a factor of ~3.6 in the illuminance as compared to CF filament. Hope to see much more miracle applications in the next decade.

    Time:

    Title: Hydrogen Evolution Reactions of Conducting Polymer-Metal Organic Framework Nanocomposites

    Kabelo Edmond Ramohlola
    University of Limpopo, South Africa

    Biography
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    Biography

    Kabelo Edmond Ramohlola
    University of Limpopo, South Africa



    Abstract
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    Abstract

    Kabelo Edmond Ramohlola
    University of Limpopo, South Africa

    The development of highly efficient electrocatalysts for hydrogen evolution reaction is a fundamental undertaking of the hydrogen economy. Herein, we investigated the electrocatalytic performance of conducting polymer (polyaniline, poly (3-aminobenzoic acid)/metal organic framework (HKUST-1) nanocomposites for hydrogen evolution reactions. The results show that the synthesized nanocomposites exhibit the best electrocatalytic efficiency at lower overpotential and the Tafel analysis ( transfer coefficient (α) and Tafel slope (b)) suggests that the rate-determining step is the Volmer (electrochemical discharge) coupled with either Tafel (chemical desorption) or Heyrovsky (electrochemical desorption) reactions.

    Time:

    Title: Epoxy Nanocomposites Functionalized using Phytogenic Silver Nanoparticles to Contain Biofilm Formation on Pvc Substrates

    Ernest David
    Thiruvalluvar University, India

    Biography
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    Biography

    Ernest David
    Thiruvalluvar University, India



    Abstract
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    Abstract

    Ernest David
    Thiruvalluvar University, India

    The objective of the study was to determine the biofilm degradation potential of sliver nano particles (Ag NPs) synthesized using the aqueous bark extract of Alstonia scholaris on PVC substrates that are used in water distribution system. The phytogenic AgNPs revealed potent antimicrobial effect. The application of the antimicrobial effective AgNPs, to contain the biofilm formation on PVC substrates was carried out by infusing the AgNPs in an epoxy resin to develop functionalized epoxy nanocomposites which can be used as surface coating on PVC substrates. Precautions were taken using solvent heating process using methyl ethyl ketone and xylene to avoid agglomeration resulting in poor dispersion of nanoparticles. The surface morphology and mechanical properties of these coatings containing phytogenic AgNPs were characterized using Fourier Transform Infrared Spectroscopy (FT-IR), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), and Epifluorescence microscopy. The anti biofilm efficacy of the functionalized epoxy nanocomposite coatings on PVC was investigated by total viable counts (CFU/Cm2) from day one to twenty five day. The results revealed that the phytogenic AgNPS infused epoxy coating, improved the micro structure of the matrix and thus enhanced the anti biofilm performance. Further, the antimicrobial kinetic studies revealed that the effective inhibition of biofilm formation on PVC substrates coated with the epoxy nano composites. Therefore the funcionalized epoxy nano composites surface coatings on PVC substrates is an effective economical and eco friendly alternative to prevent biofilm formation on PVC substrates used in water distribution systems.

    Time:

    Title: Bridging Homogeneous and Heterogeneous Catalysis through Mof Sup-port Platforms and Other Efforts to Obtain New Class of Highly Active Recyclable Catalysts

    Sherzod T Madrahimov
    Texas A&M University Qatar, Qatar

    Biography
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    Biography

    Sherzod T Madrahimov
    Texas A&M University Qatar, Qatar



    Abstract
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    Abstract

    Sherzod T Madrahimov
    Texas A&M University Qatar, Qatar

    The talk will focus around developing recyclable catalysts and analytical methods to study them. We will start with the discussion with synthesis, analysis and catalytic properties of Metal-Organic Frameworks (MOFs) with immobilized bidentate nitrogen ligands. This will include discussion on preparation of a number of alkyne functionalized ligands and their im-mobilization on the MOF surface through azide-alkyne “click” reaction. We will then shift the discussion to nanoparticle solubilization in nonpolar media with terminally functionalized Polyisobutylene (PIB) oligomers and application of this method to analyze MOF particles with im-mobilized complexes.1 We will show that MOF nanoparticles solubilized through this method can be interrogated through methods used for solution state analyses. Keywords: Catalysis by Metal Organic Frameworks, nanoparticle solubilization. References: 1. C.-G. Chao, M. P. Kumar, N. Riaz, R. T. Khanoyan, S. T. Madrahimov and D. E. Bergbreiter, Macromolecules, 2017, 50, 1494-1502.

    Sessions:
    Poster Presentations

    Time:

    Title: Theranostic Role of Bile Salt-capped Silver Nanoparticles- Gall Stone/Pigment Stone Disruption and Anticancer Activity

    Ranju Prasad Mandal
    University of Kalyani, India

    Biography
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    Biography

    Ranju Prasad Mandal
    University of Kalyani, India

    Ranju Prasad Mandal has completed his B.Sc (Hons.) and M.Sc. from University of Kalyani. Then he joined the lab of Prof. Swati De at Department of Chemistry, University of Kalyani. His area of research is synthesis, characterization and applications of metal and semiconductor nanoparticles, fluorescence studies of organized assemblies and synthesis and applications of liposome mimicking systems. He has published several articles in various international journals and a book chapter in the Encyclopedia of Biocolloid and Biointerface Science edited by Prof. H. Ohshima and published by John Wiley & Sons. He has submitted his Ph.D thesis entitled Structure and Applications of Some Metal and Semiconductor Nanoparticles Synthesized in Organized Media



    Abstract
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    Abstract

    Ranju Prasad Mandal
    University of Kalyani, India

    Silver Nanoparticles (AgNPs) have been synthesized in situ in micelles formed by the bile salt sodium deoxycholate (NaDC). The AgNPs exhibit green fluorescence. It has been shown in the present study that they can disrupt the components of gall stones/pigment stones. This unique ability of the AgNPs has been observed upon detailed study of the interaction between the endobiotic pigment bilirubin (BR) and bile salt (NaDC). In addition, these AgNPs show significant cytotoxicity towards the breast cancer cells (MCF-7). Thus the AgNPs synthesized in this work show important physiological activity and can serve as prospective Theranostic Materials in future. Their green fluorescence bears relevance to future diagnostic applications while their anticancer activity and disruptive action upon BR aggregates in bile salt micelles is extremely important for therapeutic purpose. This is the first report of the use of metal nanoparticles in disruption of components of gall stones/pigment stones and thus the present work has very important physiological significance.

    Time:

    Title: Controlling Growth of Molecular Aggregates with Distinct Linear and Nonlinear Optical Properties

    Yongjun Li
    Beijing National Laboratory for Molecular Sciences (BNLMS), China

    Biography
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    Biography

    Yongjun Li
    Beijing National Laboratory for Molecular Sciences (BNLMS), China

    Yongjun Li was born in 1975 in Sichuan, China. Hereceived his Master degree in Chemistry from Sichuan University in 2001, and he earned his Ph.D. in organic chemistry in 2006 at ICCAS. He is currently a Professor at the Institute of Chemistry, Chinese Academy of Sciences. He has published more than 100 peer reviewed scientific articles and invited reviews in the journals, such asNat. Commun.、Acc. Chem. Res., Chem. Soc. Rev., J. Am. Chem. Soc., Angew. Chem. Int. Ed.et al..His research interests lie in the fields of design and synthesis of functional organic molecules.



    Abstract
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    Abstract

    Yongjun Li
    Beijing National Laboratory for Molecular Sciences (BNLMS), China

    Two novel donor–acceptor molecules, 2,7-diphenylbenzo[1,2-b:4,3-b′]difuran-4,5-dicarbonitrile and 2,7-bis(4-methoxyphenyl)benzo[1,2-b:4,3-b′]difuran-4,5-dicarbonitrile containing cyano group as the electron acceptor, were synthesized. Their single-crystal structures, molecular packing, and self-assembly behaviors were also investigated. By simple solvent evaporation techniques, these compounds self-assemble into various low-dimensional microstructures that demonstrate distinctive nonlinear optical properties depending on the orientations of their transition dipoles. This study highlights the importance of the transition dipole moment in the construction of low-dimensional molecular materials with highly efficient nonlinear optical properties.

    Time:

    Title: Enhance Radiotherapy Dose Based on Gold Nanoparticles

    Mansour Mohammed Hagar
    Sudan University of science and technology, Sudan

    Biography
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    Biography

    Mansour Mohammed Hagar
    Sudan University of science and technology, Sudan

    Mansour Mohammed Hagar was born in Omdurman, Sudan, in 1986. He received diploma degree in radiological and medical instrumentation from Sudan University of Science and Technology, Sudan, in 2010, and the B.Sc degree in Biomedical engineering from Sudan University of Science and Technology, Sudan, in 2013 , now he is a graduate student . In 2010, he joined as clinical engineer at the Ombda model hospital. in 2013 he joined Mashreg university of science and technology as a Teaching Assistant, department of biomedical engineering, in 2015 he joined the university of medical science and technology Department of Biomedical Engineering as biomedical workshop coordinator and in January 2017 joined ALmashfa international hospital as biomedical engineering in Saudi Arabia. His current research interests include Nano medicine and Medical Instrumentation design. Mr. Mansour has been a member of Sudanese Medical Engineering Society (SMES) since 2013. also he founded the radiological and medical instrumentations engineering organization, Sudan.



    Abstract
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    Abstract

    Mansour Mohammed Hagar
    Sudan University of science and technology, Sudan

    Gold nanoparticles in chemotherapy is the use of colloidal gold in therapeutic treatments, often for cancer or arthritis. Gold nanoparticle technology shows promise in the advancement of cancer treatments. With tumor-targeting delivery vectors becoming smaller, the ability to by-pass the natural barriers and obstacles of the body becomes more probable. To increase specificity and likelihood of drug delivery, tumor specific ligands may be grafted on to the particles to circulate throughout the tumor without being redistributed into the body, Gold nanoparticles can absorb infrared light, resulting in heating and Removes carcinogenic cells in tumors. Gold nanoparticles have also been used for enhancing the X-ray dose to tumors. The combination of body temperature and radiotherapy is interactive, importantly allowing a reduction in X-ray dose with improved therapeutic results. Here we intratumorally infused small 15 nm gold nanoparticles engineered to be transformed from infrared-transparent to infrared-absorptive by the tumor, then heated by infrared followed by X-ray treatment. Synergy was studied using a very radio resistant subcutaneous squamous cell carcinoma in mice. It was found that the dose required to control 50% of the tumors, normally 50 Gy, could be reduced to < 10 Gy (a factor of > 3.5). Gold nanoparticles therefore provide a method to combine body temperature and radiotherapy to drastically reduce the X-ray radiation needed, thus sparing normal tissue, reducing side effects, and making radiotherapy more effective.

    Time:

    Title: Synthesis and Characterization of Graphene Oxide Under Differing Conditions

    Olayinka O Ojo
    University of KwaZulu-Natal, SouthAfrica

    Biography
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    Biography

    Olayinka O Ojo
    University of KwaZulu-Natal, SouthAfrica

    Olayinka Oluwaseun Ojo obtained her M.Tech in 2015 from school of chemistry, Federal University of Technology, Akure, Nigeria. Currently, she is pursuing her PhD degree at University of Kwazulu-Natal, Durban, South Africa under the supervision of Prof Sreekantha Jonnalagadda. Her current research interest is focused mainly on the synthesis and application of carbon-based graphene oxide.



    Abstract
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    Abstract

    Olayinka O Ojo
    University of KwaZulu-Natal, SouthAfrica

    Carbon based graphene oxide was synthesized by a modified Hummers method with different ratios of graphite to sodium nitrate (NaNO3) of 1:1, 1:2, and 2:1. These variations were carried out to determine which conditions would afford more oxygen functional groups. The products obtained, namely, GO1:1, GO1:2, GO2:1, were characterized by means of powder XRD, FTIR, SEM, TEM, elemental analysis, and Raman spectroscopy. XRD revealed that GO2:1 is more crystalline than either GO1:1 or GO1:2, while Raman spectroscopy confirmed the in-phase vibration (G-band) of GO2:1 at 1596 nm and the disorder band (D-band) at 1347 nm. TEM showed the expected layer structure of the graphene oxide sheet. FTIR revealed the presence of oxygen functional groups while the elemental analysis confirmed that GO 2:1 has more oxygen functional groups than GO1:1 and GO1:2. Thus, the synthesis of GO with a limited amount of sodium nitrate provided a more crystalline and oxygen-functionalized material.

    Time:

    Title: Synthesis of Biopolymer Based Platinum Nanoparticles And 5-fluorouracil Loaded Platinum Nanoparticles and Evaluation of Their Anti-tumor Potential Employing Potato

    Godugu Deepika
    Osmania University, India

    Biography
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    Biography

    Godugu Deepika
    Osmania University, India

    Godugu Deepika is pursuing PhD in Pharmacology under the supervision of Prof. B.Sashidhar Rao, Osmania University, Hyderabad, India. My present research interests are development of facile and eco-friendly method for synthesis of metallic nanoparticles using biopolymer (Gum Kondagogu) which acts as capping, stabilizing and reducing agent, and its applications as a effective carriers in sustained release/enhanced activity of drugs with nanoparticles by in vitro (mammalian cell lines) and in vivo (animal model) studies.



    Abstract
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    Abstract

    Godugu Deepika
    Osmania University, India

    A facile and green synthesis of platinum nanoparticles (GKPtNP) using biopolymer, Gum Kondagogu (GK) as a reducing, capping and stabilizing agent was developed. The formation and stability of GKPtNP was confirmed by UVvisible spectroscopy, SEM-EDAX, TEM, XRD, Zeta potential analysis, FTIR, ICP-MS and stability studies. The formed GKPtNP are well dispersed, homogenous and showed a characteristic absorption peak at 201 nm, with a size of 2-4�0.50 nm and recorded negative zeta potential (−46.1 mV) indicating good stability. 5-fluorouracil (5FU), a known anticancer drug, was loaded into the synthesized GKPtNP, which leads to the development of a new combination of nanomedicine (5FU-GKPtNP). The in vitro drug release studies of 5FU-GKPtNP in pH 7.4 showed a sustained release profile over a period of 120 mins, and the hemolysis studies revealed that GKPtNP, 5FU and 5FU-GKPtNP were found to be blood compatible. A. tumefaciens induced in vitro potato tumor bioassay was employed for screening the anti-tumor potentials of GKPtNP, 5FU and 5FU-GKPtNP. The experimental results suggested, a complete tumor inhibition by 5FU-GKPtNP at a lower concentration than the GKPtNP and 5FU respectively. Further, the mechanism of antitumor activity was confirmed by their interactions with DNA using gel electrophoresis and UV-spectroscopic analysis. The electrophoresis results revealed that the 5FU-GKPtNP totally diminishes DNA and the UV-spectroscopic analysis showed hyperchromic effect with red shift indicating intercalation type of binding with DNA. Over all, the present study revealed that the combined exposure of the nanoformulation (5FU-GKPtNP) resulted in the enhanced antitumor effect on A. tumefaciens induced potato tumor bioassay.

    Time:

    Title: Structural and Electrical Properties of CdTe Thin Films with the Application of CdCl2 Treatment

    Shankar Lal Patel
    Mohanlal Sukhadia University, India

    Biography
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    Biography

    Shankar Lal Patel
    Mohanlal Sukhadia University, India



    Abstract
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    Abstract

    Shankar Lal Patel
    Mohanlal Sukhadia University, India

    This work presents a study on structural and electrical properties of electron-beam evaporated CdTe thin films with the application of post-CdCl2 treatment. The films having thickness 550 nm were grown on glass and ITO substrates followed by CdCl2 treatment and annealing at different temperature and then subjected to X-ray diffractometer and source-meter to investigate the structural and electrical properties, respectively. The films are found to be polycrystalline in nature having cubic phase at low annealing temperature (≤320°C) and mixture of cubic and hexagonal phases at higher temperature (470°C). The improvement in crystallinity is also observed with CdCl2 heat-treatment and maximum grain-growth achieved for films annealed at 320°C. The electrical analysis reveals that the current have linear behavior with voltage and electrical resistivity is increased with post-CdCl2 treatment. The investigated results indicate that the post-CdCl2 treated films annealed at 320°C may be well-suitable for thin film solar cells as an absorber layer.

    Time:

    Title: Morphology Directed Plasmon Enhanced Two Photon Absorption in a Strongly Coupled Nano-Molecular Hybrid

    Kaweri Gambhir
    CSIR-National Physical Laboratory, India

    Biography
    χ

    Biography

    Kaweri Gambhir
    CSIR-National Physical Laboratory, India



    Abstract
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    Abstract

    Kaweri Gambhir
    CSIR-National Physical Laboratory, India

    A long-standing goal in optical sciences has been to strengthen nonlinear optical effects at lower light powers or pulse energies[1]. In this perspective, strongly-coupled hybrids which offer significant third order optical nonlinearities at low powers are currently a topic of global research[2,3]. Herein, we report a detailed analysis of third order nonlinear photonic characteristics of the fabricated nanohybrid system at moderate signal power. The far field and near field optical coupling between the constituents of the hybrid was investigated using Near field scanning optical microscopy and Raman spectroscopy respectively. While the optical nonlinearity (i.e. two photon absorption in this case) was studied using Z-scan spectroscopy. The experimental outcomes reveal that both in the linear and the nonlinear regime the dye and the gold nanocomposites represent a highly interacting system. A 400%, 120%, 32% and 39% enhancement in the two photon absorption coefficients of an organic dye Eosin Yellow is observed when hybridized with Au islands, gold nanoflowers, gold nanopebbles and gold nanospheres respectively. The results are explained in terms of the energy transfer from the dye to the hybridized nanostructures. The investigations of such mechanisms and development of such approaches, may bring forth exciting advances, not only in terms of strongly interacting photons, but also cast new light on energy transfer mechanisms involved, which are of considerable importance and may lead to the first practical application enabled by these techniques.

    Time:

    Title: The Semiconductor Compound Cu2Zn1-xCdXSnS4 for Solar Cells

    Maarif Jafarov
    Baku State University, Azerbaijan

    Biography
    χ

    Biography

    Maarif Jafarov
    Baku State University, Azerbaijan



    Abstract
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    Abstract

    Maarif Jafarov
    Baku State University, Azerbaijan

    The semiconductor compound Cu2Zn1-xCdXSnS4 (CZCTS) is considered as one of the ideal photovoltaic absorber layer materials for low-cost thin film solar cells, since CZCTS has a large absorption coefficient and all the constituent elements are naturally abundant. A Cu2Zn1-xCdXSnS4 (CZCTS) thin films system (where x = 0 and 0.2) are deposited using chemical bath deposition method on the alluminium and İTO glass substrates.The films deposited onto İTO-glass slides were first cleaned with detergent water and then dipped in acetone. Solution were prepared by mixing 0.2 M aqueous solutions of CuCl2, ZnCl2, CdCl2, SnCl4, and thiourea [CS(NH2)2] at ratio of 2x:1-x: x: 1: 4 (Cu,Zn,Cd,Sn,S) using a magnetic stirrer. The films had a uniform thickness of (800) nm. the structural properties were determined by X-ray diffraction (XRD; Shimadzu) with CuKα radiation (λ = 1.5406 Å). Film morphology was analyzed by atomic force microscope (AFM)- type (CSPM). The optical absorption and transmission spectra were obtained using a UV-vis spectrophotometer within the wavelength range of 300 nm to 1100 nm. The XRD patterns show the major diffraction peaks at 2θ= (28.59) and (28.4) for CZTS at x = 0 and for CZCTS at x = 0.2. The increase in cadmium (Cd) as shown by the shift in the main diffraction peak to a lower value of 2θ is attributed to the increase in lattice spacing of the longer Zn atom (1.71 A°) substation for smaller Cd atoms (1.53 A°). Furthermore, an increase in the main peak intensity is observed in the presence of cadmium. A comparison with ASTM card JSPDS 26-0575 reveals that the CZTS (x = 0) thin film exhibits a crystal structure tetragonal type of kestrits phase with a preferred orientation (112) and other planes, i.e., (220) and (312). For 2θ= (28.59, 47.5, 56.1 The CZCTS film at x=0.2 has a tetragonal phase. The absorbance layers of CZCTS were measured from 300nm to 1100nm. Shows the plot of α (cm-1) versus the wave length λ, which suggests that the two Film exhibits high absorption coefficient ( > 104 cm-1). Thus a very thin layer of film (1-2μm) can absorb over 90% of photons over the spectrum, with higher photon energy in the bandgap. The optical properties of the CZTS layer can be improved with a substitution of Zn atoms by Cd atoms to give lower energy gap gap, because since ZnS has a direct optical band near 3.6 eV that gives a higher energy gap of CZTS. The absorption edge shifts to the NIR region with increased x. The obtained optical gap for CZTS is (1.7)eV which agrees with the CZTS bandgap and 1.66 eV for CZCTS at x = 0.2. Eg decreases with increased cadmium content. The CZCTS films coated on Al substrates were applied to the preparation of CZCTS solar cells. The CZCTS solar cells with a structure of Al /ZnO/CdS/ CZCTS /İn lime glass were fabricated. The performance of the solar cells was evaluated under standard AM 1.5 (100mW/cm2) illumination. The solar cell with the CZCTS absorber layer annealed at 3000C, exhibited a relatively high efficiency of 9.2% (Voc - 0,520 V, Jsc – 22,4 mA/cm2, FF – 0,65). It confirms the effect of preventing the decomposition of CZCTS phase by the addition of Sn during the annealing process. In conclusion, a simple and relatively safe approach for the fabrication of CZCTS nanoparticles has been developed. To the best of our knowledge, this is the first time that this low-temperature colloid approach has been applied to the fabrication of CZCTS nanoparticles. We found that the use of different chalcogenide sources resulted in different products of synthesis. The annealing temperature and special ambient effect on the properties of CZCTS films were investigated.

    Time:

    Title: Silver Nano-Wires as an Environmental Application

    Juan Perez Garcia
    University of Saint Lucy, Mexico

    Biography
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    Biography

    Juan Perez Garcia
    University of Saint Lucy, Mexico

    Juan Perez García (October 5, 1990) is an American theoretical physicist known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, and the physics of the superfluidity of supercooled liquid helium, as well as in particle physics for which he proposed the parton model. For his contributions to the development of quantum electrodynamics.



    Abstract
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    Abstract

    Juan Perez Garcia
    University of Saint Lucy, Mexico

    In this work we show the use of silver nano-wires production process in order to clean contaminate water. The anti-bacterial effects of silver help to kill dangerous bacteria present in the effluents for example of houses, hotels, restaurants, etcetera. Also, we present experimental results and the different conditions used in the production and testing stage of the silver nano-wires. In this work we show the use of silver nano-wires production process in order to clean contaminate water. The anti-bacterial effects of silver help to kill dangerous bacteria present in the effluents for example of houses, hotels, restaurants, etcetera. Also, we present experimental results and the different conditions used in the production and testing stage of the silver nano-wires. In this work we show the use of silver nano-wires production process in order to clean contaminate water. The anti-bacterial effects of silver help to kill dangerous bacteria present in the effluents for example of houses, hotels, restaurants, etcetera. Also, we present experimental results and the different conditions used in the production and testing stage of the silver nano-wires. In this work we show the use of silver nano-wires production process in order to clean contaminate water. The anti-bacterial effects of silver help to kill dangerous bacteria present in the effluents for example of houses, hotels, restaurants, etcetera. Also, we present experimental results and the different conditions used in the production and testing stage of the silver nano-wires.

    Time:

    Title: Role of Chitosan-Coated Silver Nanoparticles on the Liver and Spleen Tissues of Mice: Histological and Ultrastructural Studies

    Azza A Attia
    Alexandria University, Egypt

    Biography
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    Biography

    Azza A Attia
    Alexandria University, Egypt



    Abstract
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    Abstract

    Azza A Attia
    Alexandria University, Egypt

    The female population is particularly deserves special attention because toxicity may affect fetal development. In the present work, chitosan is used as a coating and stabilizing agent in synthesizing chitosan-coated silver nanoparticles. Two groups of pregnant mice were injected intraperitoneallywith 100 mg/kg of the prepared citrate and/or chitosan-coated AgNPs, every other day after mating until the 19th day of pregnancy. Control pregnant mice received the vehicle (0.5 ml of 0.9% saline solution, and treated by the same manner). Characterization of the citrate-coated and chitosan-coated AgNPs by transmission electron microscope (TEM) and particle size analysis showed that the granules are spherical in shape and of 26.2 and 36.7 nm in size, while the Uv-visible (UV–Vis) absorption spectrum showed a strong, single and narrow band peak at 422 and 437 nm respectively. In citrate-coated AgNPs, the histopathological examination revealed hydropic degenerative changes, cytoplasmic vacuolization, and inflammatory cells infiltration in the hepatic tissue. Ultrastructural results revealed the appearance of abnormal accumulation of glycogen, and presence of the nanogranules inside the mitochondria and nucleus of hepatocytes, implicating their direct involvement in the mitochondrial toxicity and DNA damage. Examination of spleen sections revealed marked loss in lymphocyte population and the observable decrease in the reticular cells and macrophages. These histopathological changes were not evident after treatment by chitosan-coated AgNPs. In conclusion, chitosan as biopolymer loaded on AgNPs, could provide a good example in lowering cytotoxicity in the liver and spleen as compared to citrate-coated AgNPs, probably due to the chemical reduction method used during preparation of AgNPs.

    Time:

    Title: Elimination of Hexavalent Chromium by Adsorption on Natural and Modified Kaolin by a Probe Molecule

    Naouel Hezil
    Khenchela University, Algeria

    Biography
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    Biography

    Naouel Hezil
    Khenchela University, Algeria

    HezilNaouel; Doctorate degree in chemistry (Option: Physical chemistry of materials and interfaces), Magister's degree in Physical Chemistry, DEA in Physical Chemistry, State Engineer Diploma in TChemistry (Analytical chemistry). Bachelor of Science (Exact Science). Teacher at the university abbes alaghrour, khenchela Algeria since 2012, Teacher at the University of Batna from 2009 to 2012, 2011-2012: Member of the Scientific Committee, Department of Biology, University of Batna. Since 2014: Member of the Scientific Committee, SM Department, KhenchelaUniversity.Since 2015: Member of the research laboratory, University of Khenchela. Since 2016 Head of Department Science of Subject University of Khenchela.



    Abstract
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    Abstract

    Naouel Hezil
    Khenchela University, Algeria

    Chromium is an element found in many liquid effluents. In its hexavalent form, it has a very high toxicity. Among the methods of treatment of releases containing chromium (VI), the most common is that which consists of a reduction followed by a precipitation of chromium (III) obtained in the form of hydroxide. This technique in the surface treatment medium nevertheless has some disadvantages: (1) production of sludge, (2) high consumption of often toxic reagents. Current research is directed towards the development of low cost processing processes using materials such as natural clays, zeolites and activated carbons. Several works showing the role of screen (antipollution) played by the clays were made. Indeed, Wagner, studied the migration of heavy metals in the basements below the different discharge sites. It has shown that heavy metals have been fully retained at a depth of a few centimeters (36 cm) below the clay-waste limit for sites with 40 to 50% clay. For our part, we were interested in the study of fixing hexavalent chromium from an aqueous solution by natural and / or modified kaolin. The study was carried out under conditions close to industrial water treatment. The study of the adsorption of hexavalent chromium showed that the maximum amounts of Cr (VI) adsorbed on natural and / or modified kaolin are respectively; 4.01 mg/g and 2.94 mg/g. Indeed the treatment of kaolin by purification, then by intercalation of a cationic surfactant, has obviously increased the surface area of kaolin from 48,7m2/g to 63.7 m2/g ,which represents an increase of 18%.

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