19^th Nano Congress for Next Generation August 30-31, 2017 Brussels,Belgium

Biography:

Ying-Chieh Lee has completed his PhD at the age of 14 years from Departmant of Materials and Science and Engineering, National Chung-Hsin University. He is Dean of Office Research and Development, National PingTung University of Science and Technology. He has published more than 60 papers in reputed journals.

Abstract:

Ni-Cr-Mn-Y-Dy resistive thin films were prepared on glass and Al₂O₃ substrates by DC magnetron co-sputtering from targets of Ni-Cr-Mn-Y casting alloy and Dy metals. Electrical properties and microstructures of Ni-Cr-Mn-Y-Dy films under different proportion of elements and annealing temperatures were investigated. The phase evolution, microstructural and composition of Ni-Cr-Mn-Y-Dy resistive films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM),  transmission electron microscopy (TEM) and Auger Electron Spectroscopy (AES). When the annealing temperature was set to 350 °C, the Ni-Cr-Mn-Y-Dy films with an amorphous structure was observed. It is found that the resistivity of Ni-Cr-Mn-Y films was increased with increasing of Dy content. The Ni-Cr-Mn-Y films with 33.2% Dy addition annealed at 300 °C which was exhibited the resistivity 1600 mW-cm with -8.2 ppm/°C of temperature coefficient of resistance (TCR).

Biography:

Seifelislam has completed his M.Sc. in sustainable energy from Hamad Bin Khalifa University and B.Sc. in mechanical engineering from Qatar University. He was awarded the first place award in the national scientific research forum in 2012. He has been working as a research assistant at the mechanical engineering department of Qatar University since 2013. His main research focus is heat transfer, thermofluids and dynamics, and nanotechnology. He has published several papers in reputed journals related to heat transfer and thermal comfort.

Abstract:

during hot summer months. By replacing the conventional single pipe evaporator with a double pipe evaporator in Heating Ventilating and Air Conditioning (HVAC) systems, there is a great potential for an enhanced thermal performance. In this study, a homogeneous nanofluid of dispersed Carbon Nano Tubes (CNT) was used as the secondary fluid in the double pipe evaporator of a 17 kW HVAC system. Three concentrations of CNT nanofluid of 0.025, 0.05, and 0.1 by weight percentage were circulated separately using a small 104 W pump connected to a 150 liters tank. The AC unit was placed in a 45 m³ balanced calorimeter of 2.24 kW heat load. Experimental results showed a promising reduction in the compressor work and an increase in the system Coefficient of Performance (COP). The collected data showed that system thermal performance depended on the evaporator secondary fluid flowrate more than condenser secondary fluid flowrate. By increasing the concentration of CNT nanofluid, the compressor work was shown to decrease while the COP was shown to increase. In comparison with the standard rated AC unit, utilizing a double-pipe evaporator and a condenser with maximum nanofluid concentration resulted in a decrease of about 52% in the compressor work and a similar percentage of increase in the system COP. As a result of the enhanced heat transfer, the operating electrical current was reduced by 30% in comparison to the rated compressor current.

Biography:

Claire Deeb has completed her Ph.D. from the University of Technology of Troyes (France) and postdoctoral research activities from Argonne National Laboratory (IL, USA) and Northwestern University (IL, USA). She currently is a research scientist at C2N - CNRS where she conducts research in the field of optics, active plasmonics, and nanophotonics. Claire is collaborating with leading groups at UIUC (IL, USA) and LMU-Munich and has led many international projects. She has given 11 invited talks and has published over 13 papers and one book chapter. Additionally, she has received 2 PhD awards and has been serving as an editorial board member of PNN.

Abstract:

Gaps formed between metal surfaces control the coupling of localized plasmons, thus
allowing gap-tuning targeted to exploit the enhanced optical fields for different applications. Classical electrodynamics fails to describe this coupling across sub-nm gaps, where quantum effects become important owing to non-local screening and spill-out of electrons.1-3 The advantages of narrow gap antennas have mostly been demonstrated for processes like SERS that are excited optically, but promising new phenomena appear when such antennas are fed by electric generators.1,4 However, the extreme difficulty of engineering and probing an electrically driven optical nanogap antenna has limited experimental investigations of physical concepts at stake in these conditions. The feasibility of structuring electron-fed antennas as nano-light sources has been recently demonstrated;4 however, this configuration remains very limited: too much power was lost as heat when operating the optical antenna, and the antenna operation time was limited by the structure lifetime to sustain a bias voltage for a few hours. The innovative structure that we suggest here will cope with all these limitations: ALD dielectric materials substitute the air gap to improve the antenna stability; a quantum efficiency of 10-1 is targeted owing to a significantly efficient antenna (2 orders of magnitude higher field enhancement). The resulting source will
operate at room temperature and have a tunable spectral response (ranging from visible frequencies to THz regime) defined by the antenna geometry and the applied bias.5 Also, this source will be compact, Si-compatible, and will not request specific emitting materials (e.g. III-V semi-conductors) to operate.

Biography:

I am fereidoon bondarian, PhD student, and I am working in two field, the first one is Nano material a defect of that on secondary metabolite and second one working on some Nano particles that made from some plant extracts like eucalyptus.

Abstract:

Increasing tendency of human societies to use medicinal plants and products derived from them, reducing the cultivation of medicinal plants, faced with extinction, the negative effects of some chemical drugs in the long time, the cost and time of extraction of secondary metabolites are reason of using modern methods to achieve faster and cheaper to this class of compounds. In view of the importance of Papaver somniferum and the only human resources to achieve significant analgesic alkaloids like Morphine, Codeine and Papaverine, this study aimed at evaluating the changes of two secondary metabolites of this plant Thebaine and Papaverine affects Nano elicitors copper oxide and zinc oxide on callus root in the cell suspension at two concentrations and three times. After reviewing the HPLC chromatogram of the sample and the rate of change tables of Papaverine and Thebaine were observed in samples treated with nano elicitors, Thebaine and Papaverine treated with 0.237 gr/ml nano copper oxide at 96 h after induction towards zero time and the comparison with the control sample at the same time is considerably reduced. Other results include the highest percentage Thebaine treated with 0.162 g/ml nano zinc oxide at 144 h after induction noted 94.6472%.

Biography:

Iman Farahbakhsh is currently an assistant professor of material science and metallurgy engineering at the Islamic Azad University in Iran. He has a BSC in material science and metallurgy engineering from Ferdowsi University of Mashhad and MSC in extractive metallurgy from Amirkabir University of Technology (Tehran Polytechnic) and PhD in Nanomaterials from Iran University of Science and Technology (IUST) and he was as visiting professor in Kumamoto University in Japan. He was involved in some international project till now and he has more than 10 ISI paper (WOS) in high quality journals and more than 40 international conference.

Abstract:

In this study, Fe50Ni50 alloy powders were synthesized by Mechanical alloying process using planetary high- energy ball mill (Pulverisette 5, Fritsch) for milling times: 2, 5, 10, 30, 50, 70 h and for the weight ratio of balls to powder (BPR) 30:1, under argon atmosphere. The alloy formation and different physical properties were studied as a function of milling time, using X-ray diffraction (XRD) technique, Field emission scanning electron microscopy (FESEM), Transmission Electron Microscopy (TEM), vibration sample magnetometer (VSM) and Fourier transform infrared (FTIR) spectroscopy. Increase in milling time, led to reduction in crystallite size (D) in the super paramagnetic phase, thus inducing a higher magnetization to the about 120 emu/g, which is significantly higher compared with the work of others. Also reduction in crystallite size led to lower coercivity. Optical studies showed that determined grain size based on hysteresis curve for 70h of milling time is in the same order of radiation wavelength.

Biography:

Prof. L. Q. “Rick” Wang received his PhD from University of Alberta (Canada) and is currently a full professor in the Department of Mechanical Engineering, the University of Hong Kong. He is also the Qianren Scholar (Zhejiang) and serves as the director and the chief scientist for the Laboratory for Nanofluids and Thermal Engineering, Zhejiang Institute of Research and Innovation (HKU-ZIRI), the University of Hong Kong. He has over 30 years of university experience in thermal & power engineering, energy & environment, transport phenomena, materials, nanotechnology, biotechnology, and applied mathematics in Canada, China/Hong Kong, Singapore and the USA, and 2 years of industrial experience in thermal engineering and technology management. Prof. Wang has secured over 70 projects funded by diverse funding agencies and industries including the Research Grants Council of Hong Kong, the National Science Foundation of China and the Ministry of Science and Technology of China, totaling > US$15m (excluding US$ 2.2 billion for AMS project). Prof. Wang has published 10 books/monographs and 356 book chapters and technical articles, many of which have been widely used by researchers all over the world, and is ranked amongst the top 1% of most-cited scientists (ESI). He has also filed 22 patent applications and led an international team in developing a state-of-the-art thermal control system for the Alpha Magnetic Spectrometer (AMS) on the International Space Station. The AMS project is headed by Professor Samuel C. C. Ting (Nobel laureate in Physics, MIT, USA) and is to search for antimatter, dark matter and spectra of cosmic rays.

Abstract:

Droplets of nanoliter and subnanoliter are useful in a wide range of applications, particularly when their size is uniform and controllable. Examples include biochemistry, biomedical engineering, food industry, pharmaceuticals, and material sciences. One example of their many fundamental medical applications is the therapeutic delivery system for delivering site-specific therapy to targeted organs in the body and as the carriers for newer therapeutic options. The size, the size distribution, the generation rate and the effective manipulation of droplets at a scale of nano, pico, femto and even atto liters are critical in all these applications.  We make an overview of microfluidic droplet generation of either passive or active means and report a glass capillary microfluidic system for synthesizing precisely controlled monodisperse multiple emulsions and their applications in engineering materials, nanofluids, microfibers, embolic particles and colloidosome systems. Our review of passive approaches focuses on the characteristics and mechanisms of breakup modes of droplet generation occurring in microfluidic cross-flow, co-flow, flow-focusing, and step emulsification configurations. The review of active approaches covers the state-of-the-art techniques employing either external forces from electrical, magnetic and centrifugal fields or methods of modifying intrinsic properties of flows or fluids such as velocity, viscosity, interfacial tension, channel wettability, and fluid density, with a focus on their implementations and actuation mechanisms. Also included is the contrast among different approaches of either passive or active nature.

Biography:

Zeeshan Ahmad is a Professor of Pharmaceutics & Drug Delivery at De Montfort University (The Leicester School of Pharmacy). He is a Royal Society Industry Fellow (working closely with BlueFrog Design) and also leads the EPSRC EHDA Network (a highly interdisciplinary initiative involving industry and academia). He obtained his first and Doctoral degrees from Queen Mary (University of London). He has broad research interests in medical materials, their engineering and ultimate applications for healthcare (interfacing at chemistry, biology, physics and biomedical engineering). Specifically, these include various modes of drug dosage form manufacturing (smart nanoparticles and microparticles, bubbles, fibrous materials, printed constructs and transdermal/skin contact systems), tissue engineering (scaffolds and cell guidance), medical device coatings (orthopaedic implants) and biomedical material synthesis (polymers and bioceramics). He also has a very keen interest in novel fabrication routes (EHDA, microfluidic and emulsion methods) to address healthcare challenges. He has published extensively in the field and his research has been supported by The Royal Society, EU, Leverhulme Trust, EPSRC and numerous industrial partners (from large Pharma to SME’s).

Abstract:

This talk will focus on the emergence, rapid growth and future development of electrohydrodynamic technologies (EHDA). These technologies arise from the impact of electrical stresses on liquid media flow and the talk will show how initial simple experiments have been transformed to yield very complex nano and micro structures as biomedical materials and biomaterials, covering aspects of drug delivery and biomedical engineering devices. The talk will demonstrate structure diversity and future potential for such technologies and details for current challenges will be shown. Furthermore, the talk will also discuss recent collaborative developments between industry and academia to take these ideas and concepts forward.

Biography:

Ola Mohamed get PhD in  Ain shamas university 2000, Associate Prof. in 2006 , Full Prof. in 2011.  Her fields of Interest; Leather technology,  Leather coating to improve its mechanical and physical properties. Using Nano technology in leather finishing, Recycling leather solid wastes and Recovery of chrome from tannery waste water using different nano- materials and techniques. Participate in many national and international conferences. PI for many international projects through scientific cooperation as France and China. Get and give many Training course and scientific Presentations.

Abstract:

Leather industry is one of the most pollutant industries in the world. It produces all types of environmental pollution especially in finishing step which uses organic hazards solvents. In order to minimize the environmental impact in leather industry, water-based recipes are proposed in leather finishing. The application of an acrylic emulsion as a top coat system provides an excellent balance of safety, performance and commerciality in comparison with other coats. Acrylic resin nanosize latex whose colloidal particle size is about 23 nm with solids content of about 25% was prepared by copolymerization of MMA and 2-EHA at different monomer ratios via micro emulsion polymerization technique. The best prepared copolymer so, it was modified with different ratios of silicon dioxide nanoparticles (1-5%), then studied the properties of the modified acrylic films and applied onto leather. The physical, chemical, mechanical and thermal properties of coated leather before and after silicon dioxide nanoparticles application were evaluated and discussed.

Biography:

P. M. Dinh received her Ph.D. in 2002 in high energy nuclear physics (Institute for Theoretical Physics in Saclay, France), and has been recruited in 2003 at the Laboratory for Theoretical Physics of Toulouse. She now works on the theory of multi-electronic systems (clusters, molecules) excited by intense electromagnetic fields (lasers, charged projectiles), within time-dependent density functional theory (TDDFT) and beyond. She is a developer of the TDDFT code "TELEMAN". She has published 59 referred articles including 3 reviews and 3 book chapters, and wrote 3 books. She is a Junior member of the Institut Universitaire de France since 2012.

Abstract:

The quantum description of dissipative mechanisms in finite quantum systems is a long standing question in physics. It was originally addressed in nuclear physics, in particular a few decades ago, with the development of classical and semiclassical approaches but without no convincing fully quantum one. Therefore, many dynamical scenarios (where quantum effects still play a role in spite of dissipative trends) cannot be treated. Meanwhile, a strong experimental motivation, now in the case of nanostructures and molecules irradiated by intense lasers, has shown up. This motivated an increasing number of theoretical investigations, mostly on the basis of the well developed Time Dependent Density Functional Theory (TDDFT) provides a robust effective mean field description of many low energy dynamical scenarios. Still, these TDDFT approaches fail to account for dissipative effects leading to the (observed) electronic pattern. There is thus a crucial need for a formal and practical route to account for dissipative/thermalization features on top of quantum mean field. We propose here a formalism allowing to describe the collisional correlations responsible for thermalization effects in finite quantum electronic systems. The approach is built as a stochastic extension of TDDFT. Dynamical correlations are treated in time-dependent perturbation theory and stochastic loss of coherence is assumed at some time intervals. This theory was formulated long ago for density matrices but never applied in practical cases because of its computational involvement. With a recent reformulation of the theory, applications are now conceivable and first tests have been successfully led in a simplifed 1D model.

Biography:

Dr. Yoshitaka Fujimoto received his Ph.D. degree in Engineering from Osaka University, Japan. After receiving his Ph. D., he worked at the University of Tokyo and the University of Tsukuba. He joined Department of Physics, Tokyo Institute of Technology as an Assistant Professor. He has published more than 50 technical papers in peer-reviewed journals, reviews, book, book chapters, etc. and has served as referee of many international journals, organizer and committee in conferences.

Abstract:

Since experimental realization of a graphene sheet, two-dimensional atomic-layer sheets have received much attention from the viewpoint of nanoscience and nanotechnology. Among them, hexagonal boron nitride (h-BN) atomic-layer sheets are also expected to an important material since they possess several superior properties similar to a graphene. In the aspect of the electronic structures, both two materials exhibit considerably different features; graphene is a zero-gap material, whereas h-BN monolayer is a wide-gap material. One of the effective ways to tune electronic properties of nanomaterials is to apply strains to them. For example, the band gaps and the impurity states of h-BN monolayers are tunable by applying strains [1,2].
In this talk, I will report strain effects on the stabilities and the electronic properties of h-BN atomic layers using first-principles density-functional calculations [3,4]. I demonstrate the possible methods to tune the band gaps and the ionization energies of the impurity induced states in h-BN atomic layers. We also discuss the relationship among applied strains, band gaps and the impurity-related states of h-BN atomistic layers.

Biography:

Dominique Ausserré has completed his PhD in Collège de France, Paris, has been visiting scientist in IBM, San Jose, the co-strated a soft matter lab  in Institut Curie, Paris, and then moved to Le Mans University in 1991.  He is Research Director in CNRS, France, and worked in the fields of  optics, polymer and statistical physics, material science, capillarity and surface physical chemistry, now moving towards biology and healthcare oriented technological developments. He invented self-assembled nano-composite materials made of nanoparticles and diblock copolymeris, self-assembled polar lamellar materials named Ferrochemicals, and the SEEC and BALM optical techniques. He was co-founder of two startups : Nanoraptor and Watch Live.      

Abstract:

BALM is a new wide field optical microscopy which is remarkably suited for nano enginnering. Most of the time, nano-objects have to be fixed on surfaces in order to be localized, handled, or used in combination with some environmental control. BALM is a surface imaging technique wich combines extreme (say SPR-like) sensitivity with full optical resolution. Moreover, its implementation  is confined in the half-space located below the sample, so that the upper half-space remains free for implementing environmental tools such as a fluidic cell, spectroscopic tools such as Raman analysis,  local measuring tools such as electrical and SPM probes or local fields of any type.  At last, it is a real time technique, hence offering large possibilities for kinetic studies.

Thanks to a close collaboration with Vincent Dreycke, Stephane Campidelli and Renaud Cornut in the LICSEN group of CEA Saclay, the power of the technique in the study of 2D materials was recently demontrated ¹  . 

The aim of this talk is to forecast the next coming BALM applications, supported by preliminary results obtained  with various kinds of nanoparticles, sensor chips and solid liquid interfaces. The first principles of the technique will also be exposed.

Biography:

Andriy Kovalenko is Senior Research Officer at the National Institute for Nanotechnology since 2003, and Adjunct Professor in the Department of Mechanical Engineering at the University of Alberta, Edmonton, Canada. He earned his PhD degree (1993) in Theoretical and Mathematical Physics from Lviv State University, Bogolyubov’s Institute. He has been developing methodology and software implementation of statistical-mechanical, molecular theory of solvation, coupling it with electronic structure theories, molecular simulations, and docking protocols in a platform of predictive multiscale theory & modeling of chemical, supramolecular, and biomolecular systems constituting new advances towards a general framework of multiscale methods.

Abstract:

In recent two decades, molecular theory of solvation for nanostructures in both aqueous and non-aqueous solutions, a.k.a. three-dimensional reference interaction site model (3D-RISM) with the Kovalenko-Hirata (KH) closure relation, was systematically developed and applied to a variety of compounds, supramolecules, and biomolecules in a number of solvents, solvent mixtures, electrolyte and non-electrolyte solutions. From the first principles of statistical mechanics, 3D-RISM-KH theory predicts the solvation structure and thermodynamics of nanochemical and biomolecular systems, including their analytical long-range asymptotics. It yields improved accuracy, efficiency, and applicability by coupling models and methods at different space and time scales to provide fundamental understanding and prediction for nanomaterials and biomolecules. The method has been coupled with quantum chemistry, molecular dynamics, and dissipative particle dynamics. Examples include helical rosette nanotubes with tunable stability and hierarchy, water promoted inversion of supramolecular chirality, formation and stability of self-assembling supramolecular structures of organic rosette nanotubes with ordered shells of inner and outer water, and highly accurate & efficient dissipative particle dynamics of polymer chains with coarse-grained effective pair potential obtained from DRISM-KH theory. Recent applications of 3D-RISM-KH consist in multiscale coupling of quantum chemistry, molecular solvation theory, multi-time step molecular dynamics, and dissipative particle dynamics. Calculations show the dependence of the polymerization degree on organic solvents properties and temperature/pressure change. Aggregation of kaolinite platelets due to face-to-face, edge-to-face, and edge-to-edge interactions and temperature/pressure strongly affect bioadsorption on clays and flocculation of clay nanoparticles in aqueous and non-aqueous solutions with polymers. Multi-Time-Step Molecular Dynamics coupled with 3D-RISM-KH molecular solvation theory and Generalized Solvation Force Extrapolation (MTS-MD/3D-RISM-KH/GSFE) provides quasidynamics description of biomolecules. Validation included folding of miniprotein in solution from fully extended to equilibrated state in 60 ns, which provides acceleration by two orders of magnitude time scale as compared to 4-9 µs protein folding in experiment.

Biography:

Hyung Ho Park is a Professor in the Materials Science & Engineering Department of Yonsei University in Korea since 1995. His research focuses on the preparation, characterization, and application of various functional thin films including nano-particle preparation, nano-hybridization, and nanostructure formation. Nano-hybrid thin films are prepared by the incorporation of nano-particles or in situ one-pot synthesis. Nanostructure formation involves nano-particle distribution in TCO and organic conductors and the control of nano-pore size and distribution in mesoporous thin films. He has published more than 380 SCI(E) papers in reputed journals and has been serving as an Editorial Board Member of more than 5 journals.

Abstract:

Mesoporous oxides have a structure containing nano-sized pores of 2~50 nm and are prepared by sol-gel procedure using evaporation induced self assembly. The pore size, pore distribution (regular/irregular, open/close), and pore shape can be controlled according to the synthetic process, especially with surfactant molar ratio. The existence of pores in the material grants distinctive properties such as decreased thermal conductivity from increasing phonon scattering. Therefore mesoporous oxides can be used in many applications such as thermal insulators, thermoelectrics, gas sensors, and so on. The efficiency of a thermoelectric is determined by its dimensionless figure of merit, Z = S²σ/κ where S, σ, and κ are the Seebeck coefficient, electrical conductivity, and thermal conductivity, respectively. According to this equation, good thermoelectric material should possess large power factor (PF = S²σ) and low thermal conductivity. When introducing the pore structure, thermal conductivity can be greatly decreased but also with electrical conductivity due to electron scattering by pore structure. So, in the case of mesoporous structure adoption to thermoelectric materials, a minimum reduction in electrical conductivity while maximizing thermal isolation effect is a key issue for an enhancement in the thermoelectric property. In this presentation, various experimental approaches including a control of pore structure and introductions of dopants and nano-materials to enhance the thermoelectric property are discussed. Through the approaches, we tried to control the thermal conductivity and electrical conductivity of mesoporous oxides individually to maximize the thermoelectric property.