Biography:

Dr. M. M. Khusniyarov graduated from Novosibirsk State University (Russia) in 2002. After he obtained his PhD from Philipp University of Marburg (Germany) in 2006, he spent 2.5 years as a postdoc at Max Planck Institute for Bioinorganic Chemistry (Germany). In 2009, supported by a prestigious Liebig fellowship, he started his independent carrier by establishing a junior research group at Friedrich-Alexander University of Erlangen-Nuremberg (Germany). His research field includes magnetic and photomagnetic materials, molecular switches and sensors, applied spectroscopy and theoretical calculations. He is the author of 31 research publications in high rated journals and one review article.

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Abstract:

Continuous miniaturization of devices as demanded by modern society requires construction of smaller and smaller device components approaching the limits of the conventional "top-down" approach. An alternative "bottom-up" approach flourishing in widespread nanotechnologies allows to overcome these limits. One step in miniaturization beyond the nanoscale is the development of true molecule-based devices, in which single molecules are the active components in the ultimate case. In this regard, molecular switches are the key components for prospective molecular electronics and spintronics. Our research group develops unique molecular switches – molecular coordination compounds – whose magnetic properties can be reversibly changed at room temperature. To accomplish this goal, photoisomerizable ligands were introduced into bistable molecules of two families: spin-crossover metal complexes and valence tautomeric metal complexes. The efficient and reversible photoswitching in spin-crossover species was achieved using the Ligand-Driven Light-Induced Spin Change (LD-LISC) effect and proceeds in solution and in the solid state. The switching of valence-tautomeric cobalt complexes was accomplished by two novel effects: Coordination-Induced Valence Tautomerism (CIVT) and Ligand-Driven Light-Induced Valence Tautomerism (LD-LIVT), both developed in our group. To this end, we demonstrated that magnetic properties of isolated molecules can be conveniently switched at room temperature. Modulation of magnetic properties at molecular level at ambient conditions may open new horizons in development of ultra-high-density memory units and molecular sensors.

Biography:

Jijeesh R Nair obtained his European Doctorate degree (2010) in Materials Science & Technology from Politecnico di Torino, Italy. He is a co-author of 50 publications published in peer reviewed ISI journals. He has attended 30+ conferences in Italy and abroad. In 2010, he won the Oronzio and Niccolo' De Nora Foundation Prize of the Italian Chemical Society. In 2012, he won the most prestigious ENI AWARD 2012 –Debut in research category from the Italian President Giorgio Napolitano. He has been serving as an Editorial Board Member as well as reviewer of several reputed international Journals.

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Abstract:

Polymer electrolytes (PEs) exhibit unique advantages such as mechanical integrity, wide variety of fabrication methods in desirable size and shape, possibility to fabricate an intimate electrode/electrolyte interface and adapt to a lightweight, leak proof construction, safety and economic packaging structure. Free radical photo-polymerization (UV-curing) can be an interesting alternative process to produce polymer electrolytes for Li-ion batteries. It takes place at ambient temperature: a liquid polyfunctional monomer, containing a proper photo-initiator, forms a cross-linked film upon UV irradiation. It appears highly advantageous, due to its easiness and rapidity in processing, very short time with high efficiency and eco-friendliness as the use of solvent is avoided. In the present work, profoundly ion conducting, self-standing and tack-free ethylene oxide based PEs encompassing a room temperature ionic liquid (RTIL)/Tetraglyme with specific amounts of lithium salt are successfully prepared via UV curing process. All the prepared materials are thoroughly characterized in terms of their physical, chemical and morphological properties, and eventually galvanostatically cycled in lab-scale lithium batteries (LIBs). The Polymer Electrolytes exhibited excellent ionic conductivity, electrochemical stability (>5V vs. Li+/Li), and stable interfacial resistance. At 20°C the conductivity value is equal to 4×10-4 Scm-1 and it exceeds 10-3 Scm-1 at 50°C. The lab-scale Li-polymer cell assembled demonstrated stable charge/discharge characteristics without any capacity (150 mAh g-1) fading. The overall performance of the SPEs postulates the possibility of effective implementation in the next generation of safe, durable and high energy density secondary all-solid Li-metal polymer batteries working at ambient and/or sub-ambient temperatures.

Biography:

Urs Meier has held various positions at the Swiss Federal Laboratories for Materials Science and Technology (Empa). In 1983, he rose to the rank of the Managing Director of Empa in Dubendorf, a position that he held until his recent retirement. In addition, he has also been Professor at the Swiss Federal Institute of Technology (ETH) in Zurich. Over the years, his accomplishments in the application of fibrous polymer based composites in civil engineering have had a tremendous impact on the field. Especially noteworthy is his work on the post-strengthening of civil structures with carbon-fiber-reinforced polymer strips, which has been successfully implemented at a growing rate worldwide and the application of CFRP stay-and post-tensioning cables.

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Abstract:

After a short review of the historical development of the time-temperature superposition principle, its application for the extrapolation of creep modulus curves will be discussed with the help of two examples. Conditions for the applicability of the principle for fibrous polymer composites will be pointed out. The normalization of the measured data will be revealed. The construction of the master creep modulus curve will be demonstrated in detail. The extrapolated values resulting from the superposition of short-term creep data of an unsaturated polyester-glass fiber composite are going to be compared with the results of long-term creep experiments. Based on this outcome, it can be concluded that the time‐temperature superposition principle is for the prediction of long‐term creep behavior a suitable tool for R&D‐laboratories to get a good impression about the tendency of the long‐term creep behavior of fibrous composites.

Biography:

Yong-Hoon Cho received his Ph.D. degree in Solid State Physics from Seoul National University, Korea in 1997. He is currently the KAIST-Chair Professor, the Head of Department of Physics, the Director of KAIST Center for LED Research, and the Chief of Educational Program for LED. He has more than 229 refereed international publications and 310 international conferences presentations. He has served as a Editorial Board Member of Scientific Reports, Associate Editor of IEEE Transactions on Nanotechnology, and Associate Editor of AAPPS Bulletin.

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Abstract:

Group III-nitride semiconductor nanostructures have attracted much attention due to their rich and unique optical properties and their versatile applications. Here, we present various nitride-based quantum nanostructures grown on pyramidal, annular, columnar, and tapered structures by using metal-organic chemical vapor deposition (MOCVD). First, we demonstrated multi-color and broadband visible light emitting diodes based on GaN hexagonal nano-pyramid and annular structures. Second, GaN-based rod structures were directly fabricated on Si substrates and then InGaN/GaN multiple quantum wells (QWs) were deposited on the surface of GaN rods. By using tapered GaN/InGaN core−shell QW semiconductor rods having a large gradient in their bandgap energy along their growth direction, highly asymmetric photonic diode behavior was observed. Finally, we demonstrate a novel approach of the self-aligned deterministic coupling of single quantum dots (QDs) to nanofocused plasmonic modes. Using this approach, we achieved strong spontaneous emission enhancement of QDs over a wide spectral range of ~150 meV.

Biography:

Philippe Miele received his PhD in Inorganic Chemistry in 1993 at the University of Montpellier (France) and completed Postdoctoral study at Georgia Institute of Technology (Atlanta, GA, USA). He is Director of the European Institute of Membranes in Montpellier. He has co-authored around 200 papers in international journals, 10 patents and has given 35 invited talks in international congresses. He has been elected in 2011 at the "World Academy of Ceramics" as Professional Member (Academician) and is affiliated with the class "Science".

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Abstract:

The development of new materials, with the goal to meet the needs of near-future technological challenges in energy or environment issues particularly, is strongly dependent on the elaboration of ceramics with suitable morphologies, shapes and enhanced properties. This ambitious goal can be achieved by both the utilization of non-conventional chemical methods and the related preparation of tailored precursors. In the case of non-oxide ceramics, the so-called Polymer Derived Ceramics route is a suitable and useful process for preparing various inorganic materials with a controlled chemical composition and in complex shapes, exploiting the potential of numerous shaping processes. The general strategy to produce such materials can be described as a molecule-to-ceramic conversion, involving a complex sequence of physical and chemical modifications. This process can be divided into two sub-processes both starting from a single-source molecular precursor. The first route lies on the creation of polymeric intermediates, allowing a subsequent shaping step whereas the second method is related to a one-step access to specific shapes. In this contribution, several examples of shaped-polymer derived nano-ceramics will illustrate this elegant method as well as their use in energy applications, particularly for hydrogen storage. We will focus on boron- and silicon-based PDCs displaying various forms and sizes, including monolith-type foams with hierarchical porosity, nanostructures including nanopowders and nanopolyhedrons, nanocomposites. Micro, meso-materials and other types of materials will be also described.

Biography:

Mario Pablo Spector is Director of the Materials Laboratory at National Technological University in the City of Parana (Argentina) and teaches Metallurgy at a secondary technical school. His main field of research interest is implantable metallic prostheses. The Laboratory he leads performs work for companies and hospitals, especially in connection with the quality of the material, machining, and finish of metal prostheses, and prepares university students in the Metallurgy field. "Applied research" is also an important aspect in his work, focusing on the area of Micro-Bio-Metallurgy, in terms of the relationship between metals and bacteria.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

Cognitive processes seem to be highly activated when curiosity intervenes as motivational energy in the classroom. This conclusion is reached after a teaching experience in a metallurgy class, with students from a technical school with low interest in learning and studying. Unlike the traditional sequence of teaching materials in which crystalline and atomic models are studied from the literature to later arrive at a phase diagram; this experience begins directly in the laboratory with students doing cooling curves for the alloy of two metals. After this, students make metallographic specimens with the solidification obtained. This experience results in a research activity by which students observe a phenomenon, measure values, verify changes and transform two metals in a number of phases before they study the theory. In this way, students understand the theoretical explanation as a necessary element to further delve into the scientific activity as opposed to pre-established knowledge that is imposed on them.

Biography:

S Rajendran holds MSc, MPhil, PhD degrees and is an Associate Professor at Saraswathi Narayanan College and a Coordinator of Unit of Rural Biotechnology at Saraswathi Narayanan College, India. He has over 50 scientific papers and projects either presented or published. He is an internationally recognized Expert in many areas of Environmental biology including solid waste management, waste water treatment, anaerobic digestion, biofuel, bioenergy production and formulator of bio-pesticide and herbicide. He is serving as a Reviewer in many biological journals. He has delivered a key note speech in various international conferences and also given invited lectures in various educational institutions and universities. He has also chaired the scientific sessions in conferences. He is one of the leading Scientific Writers in Tamil Dailies. He has conducted more than 30 scientific workshops for the upliftment of rural people and women self help groups. He also had given training to municipalities employees about garbage disposal. His excellence in environmental science he was awarded with Patron of Environment by Tamil Nadu Government in 2006. He also is serving as a Consultant in many of the environmental organizations. His research group is actively working in the following aspects: MSW management, mushroom culture, biofuel generation, waste water treatment and bio-pesticide and herbicide development. His work in biological derustification is a novel pioneer technique and growing area in the environmental biotechnology. He obtained his degrees from Saraswathi Narayanan College, Madurai Kamaraj University, India.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

Rust is the reddish brown oxide of iron formed by the action of moisture and oxygen on the metal. It is an electrochemical corrosion which weaking the iron structures. It was estimated that the corrosion alone causing a loss of over $5000 bn USD to global economy every year. According to a recent report of NACE the corrosion cost in any developing countries predicated by 5% of the GDP, for India the cost of corrosion is estimated to be Rs 1.52 lakh crores per year. All available methods for rust removal and corrosion prevention are having their own limitations. Therefore, it is an urgent need to find out suitable method to check the corrosion. A fungal based biological derustification process was observed and reported by us already. This present investigation deals with our further experiments and experiences on the fungal based technology for iron rust removal. The derustification process was repeated once again to conform the reproducibility of the technology in polybag fermenters. Rusty iron mesh which were rolled in the form of cylinders were placed in the fermenters to expose them to the aerosol particles generated by the fungus. The rate of derustification was noted. Attempts were also made to enhance the aerosol generation from the substrate (straw) by coconut water supplementation. It was observed that the rusty metals placed in the supplemented substrate where derusted quickly then the raw substrate. Various level of supplementation was also correlated with rate of derustification. Further works on rust removal process are under progress.

Biography:

Bashar Mudhaffar Abdullah has completed his PhD at the age of 32 years from Universiti Kebangsaan Malaysia and postdoctoral studies from Universiti Kebangsaan Malaysia, School of Chemical Science and Food Technology. He is the visiting research fellow at Universiti of Malaya, Clinical Investigation Centre. He has published more than 36 papers in reputed journals and more than 39 International Conferences.

Abstract:

In this study, lipid fraction of rubber (Hevea brasiliensis) seed was extracted and analyzed for toxicological effect. The toxicological compound such as linamarin in rubber seed oil (RSO) extracted using different solvents, such as hexane (RSOh), mixture of chloroform + methanol (RSOchl+mth) and ethanol (RSOeth) were also studied. Various methods analysis such as Fourier transforms infrared spectroscopy (FTIR), shrimps, colorimetric and rats methods were carried out to determine the present of such compounds. FTIR spectrum of RSO did not show any presence of cyanide peak. Bioassay experiments using shrimps had been used as test organisms to evaluate the toxicity of linamarin extract from RSOh, RSOchl+mth and RSOeth and LC50 were found to be (211.70 %, 139.40 %, and 117.41 %, respectively). The determination of cyanide by using colorimetric method was demonstrated no response of the cyanide in RSO and didn’t show any colored comparing with commercial cyanide which observed blue color. The results showed that no functional groups such as cyanide associated with linamarin were observed. Toxicological test using rats was also conducted to further confirm the absence of such compounds. RSO did not show any toxic potential to the rats. This can be attributed no hazardous linamarin were found in RSO.

Biography:

Yaakov Anker has completed his PhD at 2008 from the Department of Geophysics and Planetary Sciences of the Tel Aviv University. At a Post-doctoral position he managed the Tel Aviv University laboratory of remote sensing. At present he is the Director of the Environmental Research Department at the Samaria and Jordan Rift R&D center. He has published more than 20 papers and book chapters in refereed publications. He is also a faculty member at the Ariel University Department of Chemistry and Materials Engineering and a member of the AGU, IGU, IPBES and other professional organizations.

Abstract:

Development of constructed bio-filters for wastewater treatment is an emerging branch of bio-remediation engineering. The careful design of such systems can produce facilities with similar capabilities as industrial activated systems, with the benefit of reduces energy consumption and higher sustainability. While constructed bio-filters are usually with low environmental imprint, some systems are already acknowledged as Best Available Technic for Integrative Pollution Prevention and Control (BAT-Bio-IPPC). The basic concept of operation is transferring the polluted influent through a series of different bioreactors that may be activated or not, aerobic, anaerobic, anoxic and with different physical properties. Each reactor is actually a diverse habitat, which differs in both flora and biochemical impact. When designed properly, sequential process in a system consisting of several bioreactors may be a very efficient Bio-IPPC solution to various pollution scenarios. One of the most significant parameters in the structure of the system is the aggregate used as medium for the biological films. The most common application is of carbonate aggregates, nevertheless since carbonates are reactive to water solutions they are not the optimal strata. Our research had shown that the best natural aggregate is of volcanic origin, demonstrating resilience to weathering, as well as high porosity and specific surface, which encourage bio-films development. This research also included evaluation of artificial aggregates and in particular, bottom coal ash, construction residue and plastic medium. The comparison results demonstrated that plastics lack resilience and between non-carbonate construction residue and bottom coal ash the second is better owing to higher porosity.

Biography:

Masood Ayoub Kaloo recently completed his PhD from Indian Institute of Science Education and Research Bhopal, India. His research focus includes design, synthesis and development of novel materials for environmental, biological and photo/electronic applications.

Abstract:

Perylenebisimides (PBIs) are highly rhobust, extensively conjugated organic materials with unique optical and redox properties. Presence of imide functionalities impart PBI a highly electron-deficient nature and hence n-type semiconductivity. The dyes can be reduced to corresponding radical anions, hence potential to store electrical energy. For the first time, we attempted to reduce this dye via interface with anions in organic media (THF, DMSO). A drastic modulation of their absorption and emission properties was noticed in solution (panchromatic UV-Vis-NIR and Quenching). The reduction processes was proposed to be a Single Electron Tranfer (SET) from anion to PBI. SET phenomenon was further facilitated by incorporation of electron-with drawing substituents in bay region. The reduced PBIs were regenerated through specific chemical inputs with high redox-potential like (Zr4+, Fe3+, etc.,). The anion/cation executed switching behaviour was fully established through EPR, apart from electrochemistry and spectroscopy (absorption and emission). The stablilty of EPR active anion radical state in TLC or colum chromatography, was explored for moleculary memory. The reversible and reconfigurable magnetic sequences were visualized in the form of a feedback loop, with EPR active outputs (µa), demonstrating a data storage feature with the “write–read–erase” function. The phenomenon of bi-stable behaviour “magnetic to non magnetic” presented in this study signify a promising asset for futuristic non-volatile memory. In this presentation, design, development, exploration of PBIs as materilas of choice with promising information storage capability will be discussed. In addition to this, their structural tuning and interation with anions will be throughly presented.

Biography:

E Brandaleze has completed her PhD in National University of Rosario. She is the Head of the Metallurgy Department of the Tecnological National University from Argentina. She also is the Vice-Director of DEYTEMA Center at the same university. She has published more than 40 papers in reputed journals and has been serving as an Editorial Board Member of repute.

Abstract:

In this study the deformation mechanisms in steels with high carbon content (> 0.8% C) cold drawn studied. Plastic deformation phenomena promote dissolution of cementite in pearlite, achieving high strength and ductility. For this reason, these steels are used in critical applications such as cranes or support cables of suspension bridges. With the aim of studying the stability of iron carbides that impact in increasing the mechanical properties are tested to failure in torsion, two wire samples processed under the same conditions. These have different behaviour; one suffered fracture plane (normal) and a delaminated fracture. To this end, studies of optical and scanning electron microscopy (SEM) were performed. In addition, assays differential thermal analysis (DTA / DSC) and applying thermodynamic simulation FactSage to evaluate the stability of carbides are made. The results show heterogeneity between the central and peripheral zone of both wires and the presence of the phenomenon of curling (curling). Both phenomena are more pronounced in standard wire on greater plasticity. The phenomenon of precipitation of carbides epsilon diffusion of carbon in the ferrite-pearlite interface justifying increased mechanical strength is identified.

Biography:

Mario Pablo Spector is Director of the Materials Laboratory at National Technological University in the City of Parana (Argentina) and teaches Metallurgy at a secondary technical school. His main field of research interest is implantable metallic prostheses. The Laboratory he leads performs work for companies and hospitals, especially in connection with the quality of the material, machining, and finish of metal prostheses, and prepares university students in the Metallurgy field. "Applied research" is also an important aspect in his work, focusing on the area of Micro-Bio-Metallurgy, in terms of the relationship between metals and bacteria.

Abstract:

Cognitive processes seem to be highly activated when curiosity intervenes as motivational energy in the classroom. This conclusion is reached after a teaching experience in a metallurgy class, with students from a technical school with low interest in learning and studying. Unlike the traditional sequence of teaching materials in which crystalline and atomic models are studied from the literature to later arrive at a phase diagram; this experience begins directly in the laboratory with students doing cooling curves for the alloy of two metals. After this, students make metallographic specimens with the solidification obtained. This experience results in a research activity by which students observe a phenomenon, measure values, verify changes and transform two metals in a number of phases before they study the theory. In this way, students understand the theoretical explanation as a necessary element to further delve into the scientific activity as opposed to pre-established knowledge that is imposed on them.

Biography:

Dr Khalid Fared Ahmed is an Assistant Professor of Physical Chemistry Department in Buraydah colleges – Al Qassim, Saudi Arabia (KSA).

Abstract:

Aerospace gas turbine engines are now designed such that the heat resistant super alloys operate at temperature very close to their melting, so current strategies for performance improvement are centered on thermal barrier coatings. Lower thermal conductivities lead to temperature reductions at the substrate/bond coat interface which slows the rate of the thermally induced failure mechanisms. Alternatively, lower thermal conductivity TBC layers might allow designers to reduce the TBC thickness there by decreasing the significant centrifugal load that the mass of the TBC imposes on the rotating turbine engine components. One approach to improve TBC system is to optimize the pore morphologies in order to reduce the thermal conductivity while still retaining high in-plane compliance. The second approach to improve TBC system performance is to optimize the surface microstructure, surface densification, phase structures mechanical characteristic, chemical structure, and thermo-physical properties. The main focus of this work is to study the influence of Al PO4 (and laser)-sealed ZrO2-MgO coatings on thermal barrier coating system comprised of zirconia stabilized with magnesia top coat to predict the best improvement of TBC system and to optimize the surface microstructure, surface densification, phase structures, mechanical characteristic, chemical structure, and thermo-physical properties as well as their properties with those obtained using reference techniques. Thermal expansion studies were used to study the high temperature stability of the different coatings (reference and modified coatings) structures. As low thermal conductivity is one of the most important features of TBC, thermal diffusivity and specific heat measurements were carried out. Also the mechanical measurements (e.g., micro-hardness, tensile bond strength, young's modulus), phase analyses using XRD and chemical analysis using Electron Dispersive X-ray (EDX) for elemental analysis in scanning microscopy studies.

Biography:

Sheila Devasahayam has received her PhD from University of Queensland, National Metallurgical Laboratory-CSIR and University of Madras, India. She has completed her Postdoctoral studies from Stanford University of Sydney and UNSW, Australia. She has published more than 35 papers in reputed journals/books.

Abstract:

Metallurgy is an energy and emission intensive process and consume non-renewables such as metallurgical coke. The current global trend to move away from a carbon based fuel to reduce carbon pollution and tariff has seen the mineral sector advance clean energy options for its operations. Use of waste materials, are cheaper and alternative options to reduce the emissions drastically while reducing the process temperatures in many metallurgical operations including in iron making. Waste plastics are good source of hydrogen and carbon providing a good reducing atmosphere to many high temperature processes. In addition they also act as sink for greenhouse gases thus reducing their foot print. Plastics with advanced material properties can replace some of the additives currently used in metallurgical processes thus saving on costs. Millions of tons of plastics end up in landfills and oceans each year, between 22 percent and 43 percent of the plastic used worldwide is disposed of in landfills, where its resources are wasted. This presentation explores the means to reduce the energy requirement, consumption of non-renewable resources and also to abate the emissions in metallurgical operations.

Biography:

Fabrizio Guzzetta has completed his Bachelor in Science at the University of Palermo (Italy) in 2005, and his Master degree from University of Florida in 2013. Currently, he is finishing his Ph.D. at the Universitat Jaume I (Spain) under the supervision of Dr Beatriz Julian-López.

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Abstract:

Upconverting nanomaterials are of vast technological1-3 and bio-medical interest4-7, both from the pure scientific research and industrial point of view. Their interest lies on their ability to convert two or more low energy infrared photons into one higher energy photon in the UV-VIS range9 that can be used for less invasive teranostics and bioassays, more efficient solar cells, IR-activated photocatalytic systems, and so on. The biggest challenge that the scientific community faces for their commercial deployement is to synthesize bright-emitting, phase-consistant and small-sized nanocrystals. Normally these materials are formed of a crystal host in which Lanthanide ions act as substitutional doping within the lattice. To date, the Er3+-Yb3+ codoped β-NaYF4 is the most efficient material known. However, the upconversion phenomenon is a highly complex non-linear optical process and the efficiency depends on several factors such as the nature and crystal structure of the host lattice, the nature and local dispersion of the lanthanides, the synthetic conditions (reagents, solvent, reaction , time and temperature, pH, etc.), and so on. In this context, our study deals with the synthesis and evaluation of up-converting nanoparticles (UCNPs) with formulae Lnx-Yb0.2:NaY0.80-xF4, where x=0.5% for blue-emitting Ln:Tm3+ and x=2% for red and green-emtting Ln: Er3+ and Ho3+ systems. Here we report an account of some fundamental research performed in our group that tries to address some of these challenges to afford highly efficienttuneable UCNPs. In particular, we are focusing on the crystalline phase and size, and on the photoluminescent properties of solvothermal- and microwave-assisted NaYF4 based-nanomaterials.

Biography:

Paul Pineda Contreras is currently working on his PhD at the University of Bayreuth (Germany) under the supervision of Prof. Seema Agarwal, focusing on the photo-polymerization of novel low-shrinking resins. He received his BSc and MSc degree from the University of Marburg in 2010 and 2012, respectively. During his undergraduate studies, he made a research internship in Prof. Susanta Banerjee's group at the Indian Institute of Technology (IIT) Kharagpur on PPX modified poly(arylethere)s. After that he received his research initiative a scholarship of the Bayer-Science Foundation. His research interests are photo-polymerization techniques, materials characterization, composites and coatings.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

Cyclic monomer systems that can undergo a radical-ring opening polymerization (RROP), such as vinylcyclopropane (VCP) derivatives are highly interesting monomer resins, providing lower-volume shrinkage on polymerization than other vinyl monomers, like methacrylates. Especially among electronics, coatings, lithography, dental applications and 3D microstructures highly specified resins with low volume shrinkage are fundamental to match the precise specifications adapted for the final end-use. Thereby, cross-linkable VCP resins are currently accessing a variety of precise specifications within a wide spectrum of applications, in industry as well as in research. Thus we developed a universal concept based on selective intermolecular interactions, applying VCP resins as fast curable, low-shrinking, high-performance resin. Herein we focused on the monomer synthesis as well as on the development and characterization of a modular construction kit based on VCPs. To provide a powerful illustration, diversified resins were prepared and analyzed. Hereby, we could show an excellent control of high reactivity, nearly regardless of the chosen spacer-unit. With an appropriate variation of spacer-unit selective characteristics, like e.g. mechanical strength, thermal stability and optical refraction could be adjusted in a simple and suitable way, making the system adaptable to any use. These results are highlighted in this presentation and offer the system an outstanding prospective within various applications.

Biography:

Beatriz A Pineda-Contreras received as DAAD fellow her MSc degree in Chemistry with specialization in macromolecular chemistry from the Marburg University (2012), with a thesis on water-soluble thermoresponsive polymers with UCST behavior. She obtained her Diploma in Chemistry with focus on electrodeposition of Chitosan/Hydroxyapatite composites onto Ti6Al4V. She is working on her PhD since 2013 at the University of Bayreuth under the guidance of Prof. Seema Agarwal on synthesis and application of “smart” materials as polymeric carriers. Her research interests are “smart” polymers, water-soluble thermoresponsive polymers, their synthesis and possible applications.

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Abstract:

Thermoresponsive polymers are one of the most intensively studied “smart” materials. Polymers with UCST (Upper Critical Solution Temperature) behavior can be synthesized via free radical polymerization or via controlled polymerization methods like Reversible addition-fragmentation chain transfer (RAFT). Controlled radical polymerization methods offer several advantages in the synthesis of this type of polymers, such as sharp phase transition temperature and low hysteresis. Herein, we focused on the synthesis and characterization of copolymers of acrylamide (AAm) and hydrophobic comonomers e.g. acrylonitrile (AN) and styrene (St). The phase transition temperatures of polymer samples of poly(AAm-co-AN) could be easily tuned, showing an effective phase transition temperature. Further, we studied the chemical and thermoresponsive stability under different conditions, which increased the understanding of non-ionic UCST-type polymers for possible applications under aqueous conditions over long periods of storage. In the case of copolymers of poly(AAm-co-St), the observation of thermoresponsivity was highly dependent upon copolymer composition. Therefore, we provided controlled polymerization reactions of AAm and St up to high conversions via RAFT technique, to induce sharp phase transition temperatures in a range between 50 - 62°C. However, the same copolymers prepared by conventional free radical polymerization were not UCST responsive, even after synthesis of different St compositions. Thus the controlled polymerization of AAm with hydrophobic non-hydrolysable comonomers offers a clear highlight in the field of thermoresponsive polymers and defines new possible applications.

Biography:

Brijith Thomas is a graduate student in Leiden University. His area of interest include NMR crystallography, solar fuel cell, charge separators, battery.

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Abstract:

Spurred by worries over climate change, there is increasing interest in mimicking natural photosynthesis for the conversion of solar energy into fuel. The molecular structure and packing of self-assembled Zinc Salphen/NDI dyad and Perylene-based molecules, which are potential, charge separators were studied in detail in the solid state. While dynamic scattering, availability of diffraction grade crystal, destruction of crystal due to electron beam were the drawback of TEM, difficulty to index the bragg peaks due to overlap is the limitation of the powder XRD. The combination of MAS NMR, TEM, Powder XRD and molecular modeling provide a powerful methodology that can be of use to investigate molecular geometry (and properties) of larger unlabeled - aggregated supramolecular systems. DFT calculations were performed using the CASTEP module in the material studio with GIPAW wave function. Quantum mechanical calculations allow experimental 1H and 13C solid-state NMR spectra to be assigned in a quantitative manner to a specific molecular packing arrangement, starting from the chemical structure of a moderately sized molecule. The incompleteness of SSNMR data is supplemented by data from TEM and powder XRD. Here we simulated the distance constraints obtained from the LGCP build up curve using Simpson/Spinevolution for the selected carbon atoms. An electron density map of the proposed structure is generated and its projected down in the right orientation followed by fourier transform using EMAN2 software is employed to simulate the electron diffraction pattern. To confirm the model we simulated the powder XRD pattern using Reflex module in the material studio. We described a methodology in which the computational integration of MicroED, Powder XRD and SSNMR to propose a model for a molecule with high molecular mass, with less ambiguity. One of the biggest challenges with smarter crystallography is that it is limited to small molecules but here we proposed structures for molecules with higher atomic weight, which is around 1000 gm/mol. This methodology could be extended to understand the mechanism of battery in the near future.

Biography:

Dr M M Radwan is a Professor at the Department of Ceramics, National Research Centre, Dokki, Cairo, Egypt.

Abstract:

Raw mixes for high belite cement clinker (HBCC) have been designed on basis of chemical analyses of Egyptian raw materials with and without the additions of Egyptian oil shale obtained from Younis Gharb mine located at the Red Sea Coast in the Eastern desert of Egypt (calorific value ~2500 kcal/kg shale). LSF of the mix was maintained at 80%, silica modulus at 2.25 and C3A in the clinker not exceeding 4%. From raw mix design it was found that, with increase of % shale additions the limestone % in the raw mix decreases whereas % secondary compounds, SO3 and P2O5, increase in the clinker. Two raw mixes: One with about 11 wt% oil shale and one without shale as blank were selected for preparation of HBCC in the laboratory. The investigated firing temperatures were 1300 and 1350 oC. Characteristics of the produced high belite clinker, such as chemical composition, X-ray diffraction analysis, scanning electron microscopy besides physico-mechanical properties of its hydrated pastes have been determined and compared with the corresponding values of commercial ordinary Portland cement. It was found that, the most appropriate temperature for firing HBCC raw mixes is 1350 oC. Generally, shale additions had slight effect on the physico-mechanical properties of the produced high belite clinker.

Biography:

Nader Noroozi Pesyan received Applied Chemistry at the Sistan & Baluchistan University (1993, Zahedan, Iran), obtained his MSc in Azad University of Yazd (1996, Yazd, Iran) and his PhD of Organic Chemistry from Isfahan University of Technology (IUT) at IUT (2004, Isfahan, Iran). He has published more than 60 papers in reputed journals.

Abstract:

The cyclopropyl group is an important structure in many herbal compounds, displaying antifungal, antibacterial, antiviral and some enzyme inhibition activities. For example, bicifadine and its analogs. The first synthesis of 1,1,2,2,3-penta substituted cyclopropane was described by Mariella et al. In this research, we introduced a new method for synthesis of penta-substituted cyclopropans using ethyl cyanoacetate, malononitrile and meldrum’s acid in the presence of cyanogen bromide (BrCN) and an aldehyde under alkali condition. The obtained penta-substituted cyclopropans are useful compounds in medicinal chemistry, organic synthesis and supramolecular chemistry.

Biography:

Sylwester J Rzoska has completed his PhD in 1986, Since 2001, he is a Professor, nominated by the President of Republic of Poland at University of Silesia, Katowice, Poland and Institute of High Pressure Physics PAS, Warsaw, Poland. He is also the Head of Lab for Glasses and Ceramics.

Abstract:

Compressing mostly increases the melting temperature (dTm/dP>0), although there is a limited number of materials where dTm/dP<0). The latter includes silicon, germanium or some ionic glasses. This contribution discusses the general pattern of parameterization of both cases, with the possible extension in negative pressures domain. It is supported by the distortion-sensitive analysis yielding pressure-invariant parameters. Experimental determining of Tm(P) data is presented, including the challenging case of gallium nitride where the decomposition prior to melting occurs. Subsequently, the generalization for pressure evolutions of the glass temperature or the denaturation temperature is presented. Some new challenging features emerging for pre-melting or pre-glassy behavior under compression are shown.

Biography:

W.A. Stanczyk has completed his PhD and DSc., at Lodz University of Technology and postdoctoral studies from University of Sussex. He is the head of Inorganic-Organic Composites Research Group at CMMS. He has published more than 100 papers in reputed journals in the area of organometallic and polymer chemistry.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

The antitumor drugs Doxorubicin (DOX) and dauno-rubicin (DAU) are important anthracycline antibiotics of a broad spectrum of action, widely used in therapy. Unfortunately they can cause also serious cardiovascular side effects leading to heart failure. Thus, currently a focus is being made on synthesis of nanoparticles bearing DOX and DAU that should limit exposure of drugs to normal cells. Pathways, including encapsulation e.g. in poly(lactide-co-glycolide, poly(trimethylene carbonate-co-glutamic acid) and solid lipid nanoparticles were studied. On the other hand a number of carriers was applied for chemical bonding of doxorubicin that include polymeric and dendrimer nanoparticles or fatty acids. Polyhedral oligomeric silsesquioxanes (POSS) have been surprisingly missing from the above list of anthracycline nanocarriers, although octameric POSS is considered a next generation material in biological fields 1,2. Herein we present the synthesis of the first two, according to our knowledge, T8-POSS-doxorubicin (Scheme 1) and daunorubicin conjugates. T8-POSS cage can be easily functionalised and its small size (~1.5 nm) makes it an unique carrier, compared to the ones studied till now in binding anthracyclines. It is also well known to facilitate cell penetration, the important feature in drug delivery processes, while on decay forms only a harmless silicic acid - Si(OH4)3.

Biography:

Kimihisa Yamamoto received PhD degrees from Waseda University in Polymer Chemistry in 1990. He joined the Department of Chemistry at Keio University from 1997 as professor. Currently, he is a professor in the Chemical Resources Laboratory, Tokyo Institute of Technology since 2010. His present research interests are in developing supra-metallomolecules for nanosynthesizers involving nanoparticles, subnanoparticles and superatoms.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

We show that tinchlorides, SnCl2 and FeCl3 complexes to the imines groups of a spherical polyphenyl- azomethine dendrimer in a stepwise fashion according to an electron gradient, with complexation in a more peripheral generation proceeding only after complexation in generations closer to the core has been completed. The metal-assembly in a discrete molecule can be converted to a size-regulated metal cluster with a size smaller than 1 nm as a molecular reactor. Due to the well-defined number of metal clusters in the subnanometer size region, its property is much different from that of bulk or general metal nanoparticles. Dendrimers are highly branched organic macromolecules with successive layers or “generations” of branch units surrounding a central core. Organic inorganic hybrid versions have also been produced, by trapping metal ions or metal clusters within the voids of the dendrimers. Their unusual, tree-like topology endows these nanometre-sized macromolecules with a gradient in branch density from the interior to the exterior, which can be exploited to direct the transfer of charge and energy from the dendrimer periphery to its core. Here we show that tin ions, Sn2+, complex to the imines groups of a spherical polyphenylazo- methine dendrimer in a stepwise fashion according to an electron gradient, with complexation in a more peripheral generation proceeding only after complexation in generations closer to the core has been completed. By attaching an electron-withdrawing group to the dendrimer core, we are able to change the complexation pattern, so that the core imines are complexed last. By further extending this strategy, it should be possible to control the number and location of metal ions incorporated into dendrimer structures, which might and uses as tailored catalysts, building blocks, or fine-controlled clusters for advanced materials.

Biography:

Bruno Bureau is Professor in Material Sciences and works on the glass formation processes by synthetizing special materials based on selenium and tellurium. His group develops optical devices for mid and far-infrared sensing for medical applications or space optics for example. He is the author of about 150 papers and about 25 invited talks in the field of non-oxide glasses, infrared sensing, optical fibers; material and glass science. He received the Yvan Peychès award from the French Academy of Sciences in 2009. He has co-founded the DIAFIR Company in 2011 and is currently appointed to the “Institut Universitaire de France”.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

The glass-forming ability of chalcogen elements has been known for several decades but compared to classical oxide glasses; this class of vitreous materials is just emerging in particular in order to shape optical lenses or fibers. Indeed, they look like metallic alloys rather than classical glasses, and their main interest relies on their large optical window extending in the mid-infrared. This exceptional transparency, associated with suitable viscosity/temperature dependence is a favorable context to seize the opportunity to develop innovative optical fibers for mid-infrared sensing in biology and medicine for example. Recently, some new families of glasses, based on tellurium, have been developed to extend the working domain of these sensing devices. In particular, they give access to the CO2 absorption band in the mid-infrared which is useful for the Darwin mission of the ESA on the one hand, and in the context of the strike against the global warning on the other hand. Also, due to their unusual high electrical conductivity, some tellurium based glass compositions appeared as nice candidate for thermoelectric application as soon as they are doped with metallic elements such as copper. The talk will be devoted to the description of this atypical family of glass and their applications for the mid-infrared sensing as well as for thermoelectricity.

Biography:

Antonio Joaquín Franco-Mariscal obtained his PhD in Chemistry from the University of Cádiz (Spain) in 2011. Now is a Lecturer at the University of Málaga (Málaga, Spain) and teaches Chemistry at Juan Ramón Jiménez School in Málaga (Spain). He is a Research Chemist with interests in didactic of the chemistry and educational games for secondary school students (12–16 years old). He has published more than 70 papers in reputed journals and serves as an Editorial Board Member in Revista Eureka sobre Enseñanza y Divulgación de las Ciencias. He has received two Educational Innovation Awards in Spain (2004 and 2006) and eleven Research Awards with students.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

Periodic Table is a cornerstone of the Chemistry that should be learnt by all the students in the school. However, it is a boring and tedious task because pupils do not find a connection between the chemical elements and their daily life. The use of educational games can make the learning process of this topic more creative and enjoyable for students. Motivation, emotion, attention, concentration, implication or co-operation are the main keys of the games that can contribute to learning. Different game-based materials that can help students learning the names and symbols of the elements, their uses and properties or understanding the Periodic Table are presented in this communication. Playing forming words with chemical symbols can become more familiar the names and chemical symbols. Drawing everyday life contexts as objects of a house, a class or a car is other alternative to learn the uses of the chemical elements. Playing with the chemical elements in a card game can help pupils learn the different families of elements and their properties. Playing with the pieces of a puzzle can help them understand how the different elements can combine forming chemical compounds. Finally, designing a chemical soccer team with the symbols of the elements and competing with them in the stages of the Soccer World Cup can help students understand the Periodic Table.

Biography:

Professor Elias Siores has completed his PhD from Brunel University, UK and MBA from Wollongong University, Australia. He is the Provost, Research and Development, Bolton University, UK. He is researching in the area of smart materials for renewable energy and biomedical devices applications and has published more than 300 papers in international journals, holder of 5 international patents and recipient of 15 international awards.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

The piezoelectric effect in Poly(vinylidene fluoride), PVDF, has been utilised in the development of fibres and their integration into fabric structures for energy harvesting. A “3D spacer” technology based all-fibre piezoelectric fabrics as power generators and energy harvesters is presented. The knitted single-structure piezoelectric generator consists of high β-phase (~80%) piezoelectric PVDF monofilaments as the spacer yarn interconnected between silver (Ag) coated polyamide 66 multifilament yarn layers acting as electrodes. The novel and unique textile structure provides an output power density in the range of 1.10 - 5.10 μWcm-2 at applied impact pressures in the range of 0.02 - 0.10 MPa, providing significantly higher power outputs and efficiencies over the existing 2D woven and nonwoven piezoelectric structures. The method of producing high quality piezoelectric yarn and piezoelectric fabric provides an effective option for the development of high performance energy-harvesting textile structures for electronic devices that could be charged from ambient environment or by human movement. Furthermore, via the creation of hybrid photovoltaic films and fibres, energy can be captured from solar radiation and used where the mechanical impetus is absent. The high energy efficiency, mechanical durability and comfort of the soft, flexible and all-fibre based power generator is highly attractive for a variety of potential applications such as wearable electronic systems and energy harvesters charged from ambient environment or by human movement.

Biography:

E Brandaleze has completed her PhD in National University of Rosario. She is the Head of the Metallurgy Department of the Tecnological National University from Argentina. She also is the Vice-Director of DEYTEMA Center at the same university. She has published more than 40 papers in reputed journals and has been serving as an Editorial Board Member of repute.

To present & exhibit your MATERIALS @ our upcoming series PS: Materials Conferences | Materials Chemistry Conferences | Materials Chemistry 2020

Abstract:

In low carbon microalloyed steels (C0.1%), the content of Nb and Ti affect the phases transformation kinetic during cooling in industrial processes such as the rolling process. The final microstructure obtained determines the mechanical properties required such as: high formability, high toughness and adequate strength. For this reason is relevant to identify and determine the volume fraction of the ferrite, bainite and martensite present. Nb and Ti promotes carbides precipitation in austenite. The precipitates control the grain size increase during hot rolling process. It is necessary to deep the knowledge on the microstructure evolution at different cooling rates. An integrated methodology including dilatometry combined with microscopy techniques was developed. By dilatometry it is possible to determine phase’s transformation temperatures through the volumetric variation that occur in the steel in relation with temperature. Nevertheless, it is necessary to correlate this information with the structure characteristics. In this sense, microscopy techniques and microhardness measurements allows identifying the phases generated through each cooling rate. By Electron Backscatter Diffraction (EBSD) technique, the structural study was completed. In this paper, results obtained on low carbon microalloyed steels (with C contents between 0.11%-0.06%) applying the mentioned integrated methodology is informed. The structural study was carried out by light microscopy and Scanning Electron Microscopy (SEM) including EBSD in order to identify the microstructural constituent of steels and to determine the grain size. Also microhardness measurements allow us to confirm the phases identified in the samples. The information permits to predict the evolution of the steel structure at industrial processes conditions.

Biography:

Y.X.Wang has completed her PhD at the age of 28 years from Lanzhou University, and postdoctoral studies from Fudan University and the Hong Kong Polytechnic University. As a visiting scholar, she has worked in Physique des Solides Irradiés et des nanostructures, Université Libre de Bruxelles, Belgium, CNR-IPCF, in Istituto per i Processi Chimico-Fisici del CNR, I-56124 Pisa, Italy, and in Research Reactor Institute, Kyoto University, Osaka, Japan. She published more than 30 papers in reputed journals. Her research interesting is now focused on the simulation and modeling in nano-materials and in irradiation damage in materials.

Abstract:

Layered MAX phase ternary compound, where M is an early transition metal, A is a group A element, and X is either C or N, promised great applications in many applied fields because it combines ceramic and metallic properties. As an exemplar of MAX phase family, Ti3SiC2 exhibits a high melting temperature, high electrical and thermal conductivities, and an excellent resistance to oxidation and thermal shock. Particularly, it possesses unusual mechanical properties, such as easy machinability, a high Young’s modulus, which is thus considered as a candidate in advanced nuclear reactors. In this work, we investigated the effect of hydrogen and helium on the cleavage fracture of Ti3SiC2 in order to evaluate the reliability of Ti3SiC2 for use in nuclear industry. We have performed first-principles mechanical calculations within the density functional theory (DFT). It was found that Ti3SiC2 has the cleavage characteristics and the habit cleavage starts from Si-Ti interlayer because of relative weak Si-Ti bonding. Hydrogen and helium always accumulate along the Si layer. Helium decreases largely the critical stress of cleavage fracture of Ti3SiC2. In contrast, hydrogen does not efficiently affect the cleavage fracturing in Ti3SiC2. The difference between helium and hydrogen behaviors in Ti3SiC2 primarily originates from the difference of electronic hybridization with lattice atoms of Ti3SiC2 for helium and hydrogen. For helium, the neighboring Si atoms will be ejected by helium atoms, and the Si-Ti bonding will be broken, thus resulting in the cleavage fracturing. However for hydrogen, it is primarily hybridized with the s states of neighboring Si atoms, which does not severely disturb the p-d hybridization between Si and Ti atoms. Thus, the cleavage fracturing from Si-Ti interlayer is hardly aggravated in the presence of hydrogen. Fortunately, Ti3SiC2 has self-repair ability at the high temperature. It will desorb helium atoms at high helium pressure through Si layers. This behavior will alleviate the cleavage fracturing induced by helium. In summary, Ti3SiC2 may be a potential application material in light water or other fission reactors in the future.

Biography:

Dr. Lee D. Wilson (Ph.D.-chemistry),now is an Associate professor chemistry, at the University of Saskatchewan with research interests in a variety of areas. He specializes in Physical Chemistry and Materials Science and is currently researching the development of new types of materials (e.g., molecular sponges) that will have a tremendous impact on areas such as the environment, biotechnology, medicine, chemical delivery/separation systems, and membrane materials for water purification. This research will be of great importance to Aboriginal communities in Canada that suffer from water quality and health issues and require point-of-use treatment strategies. Wilson completed a PhD in Physical Chemistry from the University of Saskatchewan (1998) becoming the first Métis student to earn such a degree. Wilson is the recipient of several scientific and community awards including the Governor General’s Gold Medal in the Physical Sciences & Engineering, 2004 National Aboriginal Achievement Award (Science and Technology), and the Saskatchewan 2006 Centennial Medal. In 2008, Wilson was nominated as “Scientist of the Month” by the Saskatchewan Science Network. Wilson has provided mentorship and inspiration to Aboriginal youth through the Innovators in the Schools Program, Canadian Aboriginal Science & Technology Society, and has developed science programs and camps for Aboriginal students at the University of Saskatchewan.

Abstract:

Polyurethanes (PUs) were prepared by cross-linking β-cyclodextrin (β-CD) with two different types of diisocyanates, respectively. Materials with diverse structural and textural properties were obtained by varying the rate of diisocyanate addition: rapid (R) or drop-wise (D; 0.1 mL/min). Characterization of the structural and textural properties was investigated by spectroscopic (1H NMR in solution, solid state 13C CP-MAS solids NMR, dynamic light scattering, UV-vis, and IR), thermogravimetric analysis, powder x-ray diffraction, and scanning electron microscopy. The accessibility of the β-CD inclusion sites of the polymers was independently evaluated using an equilibrium dye adsorption method at equilibrium and in parallel with a kinetic dye-based uptake method. The characterization methods strong support that drop-wise additions affords materials with greater cross-linking relative to the rapid addition method. Herein, we report the first example of a cross-linked polyurethane containing β-CD with tunable structure and physicochemical properties, according to the mode of cross-linker addition (R versus D) to control the reaction conditions.

Biography:

Urfi Ishrat completed PhD in Chemistry (2009-2013) from Department of Chemistry, Aligarh Muslim University, India. Her background includes over six years of research experience in membrane science and technology. She has published 8 papers in reputed journals and a book as a first Author. She was work as a “Young Scientists” under Council of Science & Technology, UP in Aligarh Muslim University, India, (2014-2015). Her project was entitled “Advanced functional organic-inorganic nano filtration membranes: Fabrication, characterization and application in desalination of water”. She was recently selected as Assistant Research Scientist at KISR Kuwait. Presently, she is working as Assistant Professor, Department of Chemistry in Taibah University, Saudi Arabia.

Abstract:

Organic-inorganic composite membrane contains nano sized inorganic building blocks in organic polymer by molecular level of hybridization. This architecture has opened the possibility to combine in a single solid both the attractive properties of a mechanically and thermally stable inorganic backbone and the specific chemical reactivity, dielectric, ductility, flexibility, and processability of the organic polymer. The study of nano-filtration membranes and processes is a rapidly expanding research interest area. In view of foregoing, attempts have been made to synthesize new hydrocarbon ionomers, organic-inorganic hybrid membranes. Excellent thermal and chemical stability allows inorganic membranes to be used in high temperature and extreme pH applications. They have also been of interest in material science as selective gas permeable membranes. Among the methods of preparation developed the sol-gel technique is one of the most extensively applied method for preparation of organic-inorganic materials, which allows formation of inorganic frameworks under mild condition and incorporation of minerals into polymers, resulting in an increased chemical, mechanical and thermal stability without decreasing properties of polymers. There has been a growing interest in the use of inorganic membrane for several industrial and laboratory applications. This is because they offer many advantages over organic counterparts in separation processes. These include resistance to compaction under high pressure, chemical stability at high temperature (including steam sterilization procedures), insensitivity to bacterial action and a long operational life. In the field of water and waste-water treatment, filtration through an organic-inorganic membrane are most promising technology.

Biography:

Dr Azad Kumar has completed his Ph.D in the Department of Applied Chemistry at Babaaheb Bhimrao Ambedkar University, Lucknow.

Abstract:

Photocatalysis deals with reactions which are initiated by electronically excited molecules generated by absorption of suitable radiation in the visible or near ultraviolet region. Photocatalytic reactions occurring in the presence of semiconductor and light. Researchers are using photocatalysts for oxidative degradation of various non-biodegradable wastes. Titanium dioxide (TiO2), commonly known as Titania, is one of the most commonly used photocatalysts. Because of its high oxidative power, stability and non-toxicity, it promises a broad range of uses as a photocatalysts. Advantage of using TiO2 as photo-catalyst are: (a) using TiO2, the process occurs under ambient conditions. (b) Using TiO2, the oxidation of the substrate to CO2 is complete in most cases and (c) it is comparatively inexpensive and remains quite stable in contact with different substrate. In the present study, to prepare the nanocomposites of Titania by solution impregnation method. The prepared sample of Titania and copper Titania were subjected to photocatalytic degradation of Eriochrome Black T was done. The degradation of Eriochrome Black T was more prominent in case of 2 hour study, in the presence of Cu-TiO2 than the commercially obtained TiO2. The degradation of Eriochrome Black T is 40% - 50% observed in case of 2 hour study.

Biography:

Jas Pal Badyal was awarded BA/MA (1985) and PhD (1988) degrees from Cambridge University; where he subsequently held a King’s College Fellowship and the Oppenheimer Fellowship. He has been recipient of many honours relating to his work on Functional Surfaces, including the Harrison Prize from The Royal Society of Chemistry; the Burch Prize from The British Vacuum Council; and the IAAM Medal (International Association of Advanced Materials). His research has led to 3 successful start-up companies: Surface Innovations Ltd; Dow Corning Plasma Ltd; and P2i Ltd (2015 International Business Award for 'Most Innovative Company in Europe').

Abstract:

The worldwide market for functional surfaces exceeds $50 billion per annum (US Department of Energy). A key driver is the added value that can be imparted to commercial products by the molecular engineering of their surface properties. For example, the cleanliness of optical lenses, the feel of fabrics, the resistance of biomedical devices to bacteria, the speed of computer hard disks, and even the wear of car brake pads are all governed by their surface properties. The fabrication of such surfaces requires the incorporation of specific functional groups; for which there exists no shortage of potential methods including: self-assembled monolayers (SAMs), Langmuir-Blodgett films, dip-coating, grafting, chemical vapour deposition, to name just a few. However such techniques suffer from drawbacks including substrate-specificity (cannot be easily adapted to different materials or geometries) and environmental concerns associated with the utilization of solvents, strong acid / base media, or heat. Plasma surface functionalization is a promising alternative which offers a wide range of benefits including low energy consumption, absence of solvents, minimal waste, rapid treatment times, scalability, and ambient processing temperatures. The molecular tailoring of solid surfaces will be described including super-repellency, non-fouling, thermoresponsive, rewritable, opto-chiral, antibacterial, capture and release, and nano-actuation. The application of this research has led to 37 patent families and the establishment of 3 successful start-up companies (Surface Innovations Ltd, Dow Corning Plasma Ltd, and P2i Ltd). [1] The Leading Edge of Impact: Shining Examples of UK Research – Top Notch Protection, Nature Vol. 519 No. 7544 (26 March 2015). [2] Bioinspired Breathable Architecture for Water Harvesting, Nature Scientific Reports Vol. 5 (2015) 16798.

Biography:

E Brandaleze has completed her PhD in National University of Rosario. She is the Head of the Metallurgy Department of the Tecnological National University from Argentina. She also is the Vice-Director of DEYTEMA Center at the same university. She has published more than 40 papers in reputed journals and has been serving as an Editorial Board Member of repute.

Abstract:

Steel wires, under severe cold drawing deformation, develop high strength. High carbon steel (C>0.80%) has a great demand in the steel market because of the extremely high strength (5-6 GPa). For this reason, it is relevant to increase the knowledge on the structural evolution and deformation mechanisms involved during wiredrawing process due to their critical applications, among which we can mention wires for: bridges, cranes and tire cord. The mechanical behaviour aptitude is determined by torsion test. When the fracture surface is flat, the wire is apt. On the opposite, an irregular fracture surface (delamination) means poor mechanical properties. This paper presents a comparative study on steel wires (0.80% C) that presented normal behaviour and delamination problem during torsion test, in order to compare the structural evolution at high deformation. The deformation mechanisms and cementite stability was analyzed. The microstructural study was carried out applying light and Scanning Electron Microscopy (SEM). Finally, the structural information was correlated with results of Differential Scanning Calorimetry (DSC) and thermodynamic properties obtained by Fact Sage simulation. The structural study verified the presence of curling phenomenon in both steels products. It was possible to verify differences (~26%) in the interlaminar spacing () of the pearlite between wires that present normal and delaminated behaviour under torsion test. The ductility loss (in the delaminated wire) is promoted by multiple causes: higher interlaminar spacing, high nitrogen content in the product and the presence of dynamic strain aging, which is promoted by cementite destabilization and the formation of  carbide.

Biography:

Feyzan Özgün Ersoy started her PhD in 2012 in a joint project between Belgian Nuclear Research Centre and Ghent University to investigate mechanical and microstructural properties of nuclear materials for Gen IV reactors. At the same time, she worked in the FP7 MATTER Project to contribute to developing guidelines for fracture toughness tests in lead-bismuth eutectic. This project was conducted collectively between 5 institutions and covered most of her PhD work.

Abstract:

Ferritic/martensitic T91 steel is an important structural material for the Lead Bismuth Eutectic (LBE) cooled Generation IV (Gen IV) reactors. One of the biggest challenges of using this material is though its mechanical properties are reported to degrade when the material is subjected to a combination of LBE and stresses. This phenomenon is known as Liquid Metal Embrittlement (LME). Therefore, a careful investigation of the interaction between LBE and T91 is required to assess the effect of LBE on the mechanical properties of the steel, define the conditions where LME occurs and determine possible mitigation strategies for Gen IV applications. Even though the degradation of mechanical properties of the T91 material was screened during tensile tests by ductility losses, more dedicated tests such as Fracture Toughness Tests (FTT) should also be performed for design purposes. However, FTT in LBE are technologically challenging. Conventionally, FTT are made based on the unloading compliance and/or potential drop methods. Unfortunately, LBE might chemically attack the clip gages used in the unloading compliance method, while the electrical conductivity of LBE interferes with the potential drop method. Moreover, LBE can also degrade the steel parts in the test set-up, posing additional challenges. Therefore, alternative methods and dedicated set-ups are needed for FTT in LBE. In this study, challanges in performing fracture toughness tests in LBE environment will be discussed. FTT results of T91 steel will be presented including the reference tests in inert environment and comparing them with the tests in LBE.

Biography:

Dr Khalid Fared Ahmed is an Assistant Professor of Physical Chemistry Department in Buraydah colleges – Al Qassim, Saudi Arabia (KSA).

Abstract:

Material performance in many industrial applications is strongly affected by the behaviour of the surfaces. For example, corrosion response reactivity with environments, wear characteristics, and thermal properties are all critically dependent on surface character. Utilization of coatings to upgrade component performances is often a cost effective alternative to substitution of superior bulk materials. The advantage of coating technology, in general is that it marries two dissimilar materials to improve the performance of the whole. Usually mechanical strength and fracture toughness are being provided by the substrate and the coating provides protection against environmental degradation processes including wear, corrosion, erosion and biological and thermal attack. Steel alloys as a substrate material have very wide applications for blades, mill rolls, printing, piston rings, drilling equipment, gearbox, worm wheel and power generators. In such applications, the steel alloys substrates are subjected to higher thermal and mechanical loads. Increasing the anti-wear resistance and decrease of friction requires surface modification by other high wear resistant coatings. Recently, there are many surface modification processes to steel by the evolution of effective lubrication with higher performance to keep the lubricating systems running reliably and to avoid bearing and other component failures, and plasma thermal spray coatings process. Plasma spraying is the most versatile of the coating technologies. It may serve for "metalizing" all sorts of articles and has great advantages over the known galvanizing process in cases where it can be used to coat electrically non-conductive surfaces with metal. Spray materials must be melted and sprayed without decomposition or excessive vaporization in plasma flame through the optimum spray parameters. In plasma spray process, the spray material in the form of powder is rapidly brought to molten or near molten state by the plasma flame and then accelerated by a gas stream to impact a suitably prepared substrate. Upon impact, the molten metal droplets are rapidly flattened and solidify to form their splats. Microstructure and physical properties of sprayed coatings are linked to dynamic properties of molten particles impinging on a substrate.