Day 1 :
Keynote Forum
Daniil Karnaushenko
Institute for Integrative Nanosciences, Germany
Keynote: Shapeable material technologies – self-assemblying 3D mesoscopic electronics
Time : 10:00-10:30
Biography:
Daniil Karnaushenko obtained his Dr.-Ing degree in 2016 from the TU Chemnitz (Germany) for his work on shapeable microelectronics. Since 2016 he continued as a senior staff researcher at the IIN (Leibniz IFW Dresden). He was working as a visiting scientist at UT Dallas, Osaka University and Johannes Kepler Universität Linz. His research interests include flexible active electronics, magnetic sensorics, compact self-assembled 3D architectures with a focus on novel microfabrication processes, including self-assembly techniques and shapeable materials technologies.
Abstract:
Electronic devices are continually evolving to offer improved performance, smaller sizes, lower weight, and reduced costs, often requiring state of the art manufacturing and materials to do so. An emerging class of materials and fabrication techniques, inspired by self-assembling biological systems shows promise as an alternative to the more traditional methods that are currently used in the microelectronics industry. Mimicking unique features of natural systems, namely flexibility and shapeability, the geometry of initially planar microelectronic structures can be tailored. Heavily relying on cylindrical geometry, fabrication of microwave helical antennas, coils, resonators and magnetic sensors is challenging, when conventional fabrication techniques are applied. Involving novel self-assembly strategies realization of these spatially non-trivial devices in a compact form and with a reduced number of fabrication steps become feasible. This spatial self-assembly process, triggered by an external stimulus, offers a possibility of an improved performance while reducing overall manufacturing complexity of devices and components by harnessing the relative ease in which it can produce mesoscopic 3D geometries such as a “Swiss-roll” architecture. These benefits can lead to tighter a system integration of electronic components including active electronics, capacitors, coils, sensors and antennas with reduced costs fabricated from a single wafer.
Keynote Forum
Herbert Gleiter
Karlsruhe Institute of Technology, Germany
Keynote: Nano-glasses: A new kind of non-crystalline solids with new applications in technology and medicine
Time : 10:30-11:00
Biography:
Herbert Gleiter received his Ph.D. in Physics. In 1973, Gleiter became Chair Professor of Materials Science and founded in 1988 today’s Leibniz Institute of New Materials at Saarbruecken, Germany. In 1994, he was appointed Member of the Executive Board of the Research Center Karlsruhe, Germany, and 4 years later he became the Founding Director of the Center’s Institute of Nanotechnology. In 2012 the Chinese Academy of Sciences and the University of Nanjing founded the “Herbert Gleiter Institute of Nanoscience” and appointed him as the Institute’s Founding Director.
Prof. Gleiter’s received more than 40 prizes, seven universities awarded him honorary doctorates. He is a Member of 12 National Academies.of Science and/or Engineering
In the late 70’s he opened the way to a new kind of materials, called today nano-crystalline materials and more recently, he initiated the new field of nano-glasses. It is the attractive perspective of these nano-glasses that they have the potential to provide the basis a new world of glass based technologies.
Abstract:
Today’s technologies are based primarily on utilizing crystalline materials such as metals, semiconductors or crystalline ceramics. The way to a new world of technologies based on non-crystalline materials may be opened by means of nano-glasses. Nano-glasses consist of nanometer-sized glassy regions connected by (nanometer-wide) interfacial regions with atomic and electronic structures that do not exist in melt-cooled glasses. If the size of the nanometer-sized glassy regions is 5 nm or less the volume fraction of these interfacial regions is 50% or above. Due to their new atomic/electronic structures, the properties of nano-glass differ from the corresponding properties of melt-cooled glasses. For example, FeSc nano-glasses were (at 300K) strong ferro-magnets although the corresponding melt-cooled glasses were paramagnetic. Similarly, the ductility, the biocompatibility, the catalytic properties of nano-glasses were improved by up to several orders of magnitude. Moreover, nano-glasses open the way to new kinds of alloys as they permit the alloying of components that are immiscible in crystalline materials.
Just like in the case of crystalline materials, the properties of which may be changed by varying the sizes and/or chemical compositions of the crystallites, the properties of nano-glasses may be controlled by varying the sizes and/or chemical compositions of the glassy clusters. This analogy opens the perspective that a new age of technologies - a ”glass age”- may be initiated by utilizing the new properties of nano-glasses and modifying their properties by varying the sizes and/or chemical compositions of the glassy clusters.
- Advanced Nanomaterials | Nanotech for Energy and Environment | Graphene and its Applications Nanotechnology in Water Treatment | Nano Biomaterials | Nano Materials Synthesis and Characterisation Pharmaceutical Nanotechnology
Session Introduction
Naokazu Yoshikawa
Nara Women’s University, Japan
Title: Anion influence of emission properties and DFT calculations of diprotonated and triprotonated terpyridines
Biography:
I am researcher from 2000. I have completed PhD in 2008 from Nara Women’s University and continued postdoctoral studies with Osaka University and Nara educational University. I have published more than 25 papers in reputed journals. I have a interest in iridium complexes and Ruthenium complexes. Recently I am also interested in metal free emission product.
Abstract:
Triprotonated and diprotonated compounds [(L)H3]3+ and [(L)H2]2+ were prepared by the reaction of (L = terpy, tterpy and Clterpy) with a variety of acid (HF, HCl, HBr, H2SO4, and H3PO4) in water. Protonated pyridine rings are hydrogen bonded intramolecularly to the adjacent anion and intermolecularly to the adjacent PF6- in compounds. These hydrogen bonds restrain the nonradiative decay to produce intense emission. Density functional theory was applied to interpret the planarity in compounds. The attachment of two protons to the nitrogen in [(terpyH2)H2O]2+ and[(tterpyH2)H2O]2+ lead to the strong emission in acetonitrile (F = 0.29 and 0.30, respectively). The attachment of two protons to the peripheral nitrogens in [(terpyH2)H2O]2+and intermolecularly hydrogen bonded to the two adjacent F atoms in PF6-, which results in exhibiting a strong emission with a large quantum yield.
Jianqi Zhang
Inner Mongolia University of Science and Technology, China
Title: Characterization and properties of Al88Ce6TM6 amorphous alloys
Biography:
Jianqi Zhang has completed his PhD at the age of 36 years from University of Central Florida and continued postdoctoral studies from Massachusetts Institute of Technology. He is the Professor and Director of Foreign Affairs at Inner Mongolia University of Science and Technology, China. He has published about 80 papers in reputed journals/conferences and 4 books.
Abstract:
Al88Ce6TM6 (TM = Ti, Cr, Mn, Fe, Co, Ni and Cu) amorphous alloys were manufactured by melt-spun technique. The evolution of crystallization, microstructure, mechanical and electrochemical properties of the alloys was investigated by DSC, XRD, TEM, micro-indentation and electrochemical techniques. The compositional dependence of the transition metals (TM) on glass-forming ability and thermal stability was studied in terms of various criteria. The result indicates that the each of the transition metals Ti, Cr, Mn, Fe, Co, Ni and Cu, microalloyed with both Al and Ce spurs the mixture to form uniformly either a completely amorphous phase or a partially amorphous phase in which short range ordered (SRO) quasi-crystalline clusters or/and face-centered-cubic aluminum (FCC-Al) nanoparticles are embedded. Such meta-stably phased microstructures confer the Al88Ce6TM6 alloys mechanical hardness 700-950 MPa and corrosion resistance 10-7-10-8 A/cm2, much higher than the conventional Al crystalline alloys such as AA 2024, AA 6061 and AA 7075 which normally present hardness 500-600 MPa and corrosion resistance 10-6 A/cm2. The results demonstrate Al88Ce6TM6 (TM = Ti, Cr, Mn, Fe, Co, Ni and Cu) amorphous alloys have potential applications for aerospace and national defence.
Mohtada Sadrzadeh
University of Alberta, Canada
Title: Nanocomposite membranes for water treatment: Prospects and challenges
Biography:
Sadrzadeh researches the fundamental and applied aspects of membrane materials and process development, focusing on their applications in industrial/residential wastewater treatment. He has an h-index of 27 (according to Scopus) with his refereed publications cited more than 1900 times. He is currently directing Advanced Water Research Lab (AWRL) at the University of Alberta that is equipped with the membrane and nanoparticle synthesis and characterization equipment as well as membrane filtration systems. There are 15 graduate students and 4 postdoctoral fellows are working under his supervision on cutting-edge membrane technologies.
Abstract:
Membrane separation processes have become one of the fastest emerging technologies for desalination and water treatment due to their distinct advantages over traditional processes. In particular, membrane separation processes have lower operating costs, compact design and high product quality. However, the low thermomechanical strength of polymeric membranes and their vulnerability to fouling has limited the development of sustainable and energy-efficient membrane processes for many water treatment applications. Given that, much research works are currently underway on the development of high-performance membranes to tackle these challenges. The development of nanocomposite membranes combines the low fabrication cost of polymeric membranes with the high thermomechanical properties of ceramic membranes.
The general idea for the synthesis of nanocomposite membranes is to induce the thermal, electrical, hydrophilic, anti-bacterial and molecular sieve properties of nanomaterials to the base membrane. We used TiO2 nanoparticles (NPs) to effectively generate highly oxidizing hydroxyl radicals which readily attack and decompose organic contaminants in water. Electrically conductive membranes were fabricated membranes by using ITO and ATO NPs whose surface could be tuned by applying an external electrical field to prevent adsorption of foulants based on electrostatic repulsion. Graphene oxide (GO) nanosheets offered us an exciting opportunity to integrate the antibacterial, electrical properties and mechanical strength of these NPs. We also developed strategies to overcome the major challeng for the fabrication of nanocomposite membranes, i.e., the severe aggregation of the NPs and their weak compatibility with polymers. These two phenomena lead to formation of non-selective voids at the interface of the polymer and NPs, which significantly reduces the rejection percentage.
Qiadong Zhuang
Lancaster University, UK
Title: Semiconductor nanowire-based quantum materials for advanced enabling optoelectronics
Biography:
Qian-Dong Zhuang is a Reader in the Physics Department at Lancaster University UK. He is the group leader of MBE Research Laboratory. His current research is focused on novelsemicodnuctor quantum materials and quantum devices. He has published 2 book chapters and more than 90 papers in peer-reviewed scientific journals. He is an Editorial Member of Nature Scientific Reports and IoP Journel of Semiconductors.
Abstract:
The control of optical and transport properties of semiconductor heterostructures is crucial for engineering new nanoscale photonic and electrical devices with diverse functions. One-dimensional structure offers a number of advances in tailoring material composition, optical and electrical properties, bandgap, and quantum confinement. Quantum material of core-shell nanowire is an outstanding example where the shell layer plays a key role in prompting materials properties and device performance.
Here, we report the realization of unique InAsSb-based core-shell nanowires and their application for room temperature infrared photodetection. The advances of these core-shell nanowires will be discussed. We will also demonstrate core-shell nanowire photodetectors with a dramatic dark current reduction in 2 orders of magnitude and a massive photocurrent (6-fold) in comparison with bare InAs nanowire photodetector. Our study demonstrates the potential of core-shell nanowires for the next generation of photodetectors on silicon.
Sudip Chatterjee
Regent Education and Research Foundation, India
Title: The study of einstein relation in Quantum Dots Superlattices (QDSL) of nonparabolic semiconductors: Simplified theory and suggestions for further experimental determination in biomaterials
Biography:
Sudip Chatterjee is presently working as an Associate Professor in the department of Basic Science at a premier Institute of India. He had received his Ph.D.degree on some electronic transport properties of nanomaterials from Jadavpur University, Kolkata in 2005 and he continued his post doctoral research at TuDelft, The Netherlands. Presently he is working in the field of characterization and synthesis of bio-nano materials since 2008 and he had carried number of projects as the principal investigator and co investigator under the sponsorship of some premier research institutes. He has published more than 35 papers in reputed international journals. He has worked as a Senior Lecturer in St Xavier’s College, Kolkata, also as an Assistant Professor at Sikkim Manipal Institute of Technology, Sikkim, India and also he has served as the Assistant Professor at the IFHE University, India.
Abstract:
The semiconductor super lattices (SLS) have found wide applications in many electronic device structures and bio devices such as photo detectors, light emitters, avalanche photo diodes, compensatory transistors, tunneling devices, genetic diodes etc. The most extensively studied SL is the one consisting of alternate layers of GaAs and Ga1-xAlxAs, owing to its fabrication. The GaAs layers form the quantum wells and the Ga1-xAlxAs layers form the potential barriers. We wish to note that, the afore mentioned SLS have been proposed with the assumption that the interfaces between the layers are sharply defined with zero thicknesses so as to be devoid of any interface effects. As the potential form changes from a well (barrier) to a barrier (well), an intermediate potential region exists for the electrons. Thus the influence of the finite thickness of the interface on the carrier dispersion law becomes very important since, the carrier energy spectrum governs all the transport properties. In this paper, we shall investigate the DMR for the most interesting case which occurs in QDSLs of graded interfaces and compare the same with that of the constituent materials by formulating the respective one dimensional electron dispersion laws. The proposed approach has been implemented and tested on an embedded system, and it exhibits a good performance for monitoring / diagnosis applications.
Imjeong Ho-Soon Yang
Pusan National University, Republic of Korea
Title: Preparation of oxygen functional groups controlled-graphene oxide quantum dots through photo-thermal reduction process
Biography:
Imjeong Ho-Soon Yang has completed her PhD from University of Georgia, USA and postdoctoral studies from Argonne National Laboratory. She is the professor at Deptartment of Physics, Pusan National University, Korea. She has published more than 75 papers in reputed journals.
Abstract:
Quantum dots (QDs) have been attracting considerable interest for both fundamental researches and industrial development due to their spectral and size tenability. They have been ideal candidates for tunable light emitters in various applications such as biological imaging, lasers, light-emitting diodes, and optical amplifiers. Narrowly size distributed QDs with photostability are required to meet the application quality. Synthesis of graphene oxide quantum dots (GOQDs) have been studied intensively as their characteristic property led to wide applications in photovoltaic cells, ultracapacitors, and biosensor. Especially, non-toxic GOQDs are potential material in the field of medicine and biology.
GOQDs with different oxygen content and types were prepared through the photo-thermal reduction process in this work. The oxygen-containing functional groups such as epoxy, hydroxyl, carboxylic, and carboxyl groups are one of the crucial elements for determining the optical properties of GOQDs. Here we report the synthesis of GOQDs through the photo-thermal reduction process with the intense pulsed light (IPL) which decomposes the oxygen-containing functional groups as irradiation energy density varied. Photoluminescence of the photo-thermally reduced GOQDs exhibited a blue shift, which can be explained with decomposition of the oxygen-containing functional groups at the surface of GOQDs. The physical and optical properties were investigated by using Raman spectroscopy, x-ray photoelectron spectroscopy, photoluminescence, UV-vis spectroscopy, and time-resolved photoluminescence. This result suggests that the photo-thermal process with IPL provides an effective reduction of the oxygen-containing functional groups at the surface of GOQDs.
Niti Nipun Sharma
Manipal University Jaipur, India
Title: Enhanced and self-tuned motive force for locomotion of a nanorobot: possible solution from nature
Biography:
Abstract:
Locomotion of bacteria in fluid at small scale is accomplished by cilia and flagella present on its surface. In nature, presence of cilia exhibits various applications such as movement of egg for fertilization in female, mucus and dust removal from lungs and circulation of cerebrospinal fluid in brain. In literature, artificial cilia has been fabricated and used for mixing and movement of fluid in microfluidic applications. In the present study, the branches (cilia) on flagella (paramecium) has been employed as tree branch concept for designing of artificial nanoswimmer and experiments have been performed at scaled up level in silicon oil medium to mimic human body environment. The effects of primary branches have been investigated by fabricating the branched flagella using flexible PDMS (polydimethylsiloxane) biocompatible material suitable for human body and biological applications. It has been observed that by increasing number of primary branches from 14 to 28, increase in deflection approximately 23% has been observed. The observed deflection is correlated to the thrust force developed by the propulsion of flagellated nanoswimmer. The thrust force generated due to planar wave actuation of flagella is being picked up by laser micrometer in terms of displacement of cantilever beam. The work also provides a theoretical model that supports the experimental results. The concept of self- tuning also have been studied through statistical analysis probability density function (PDF) which means variations in deflection data can be decreased by increasing number of primary branches.
The current study focus on how branched density affects the output performance in terms of self-tuning and thrust force generation for different model of nanoswimmer. Two designs of nanoswimmer have been investigated experimentally to prove the hypothesis and results are leading towards possible design by improving the efficiency of nanoswimmer. The statistical analysis is performed to endorse the self-tuning and thrust force conception of designed nanoswimmer via probability density function (PDF) and root mean square (RMS) plot of recorded deflection from experimental study. In literature, the effect of viscosity also can be seen to examine the increase in thrust force for nanoswimmer which is also being considered in the present work.