Prof. GONG Hao
Dept Mat. Sci & Eng, National University of Singapore.
Dr. Hao GONG is a Full Professor of Materials Science and Engineering at National University of Singapore. He is also the coordinator of the transmission electron microscopy laboratory at Department of Materials Science and Engineering. His research interests include transparent oxide conductors and semiconductors (n-type and p-type), energy storage materials and devices (mainly supercapacitors), energy harvest materials and devices (mainly solar cells), gas sensors, functional thin film and nano-materials, materials characterization (mainly on transmission electron microscopy and electron diffraction).
Dr. Gong received his B.S. degree in Physics at Yunnan University in 1982. He passed his M.S. courses in Yunnan University, carried out his M.S. thesis research work at Glasgow University, UK, and received M.S. degree of Electron and Ion Physics at Yunnan University in 1987. He then did his PhD at Materials Laboratory at Delft University of Technology, the Netherlands, and obtained PhD degree there in 1992. He joined National University of Singapore in 1992, and is currently full professor at Department of Materials Science and Engineering. He has published about 200 refereed papers in major international journals and a few US patents. He has delivered several invited talks at international conferences. He has been chairman or committee member of several international conferences, and editor of special issues of some journal.
Prof. UMEMURA Kazuo
Department of Physics,Tokyo University of Science,
Dr. Kazuo Umemura is a full professor of Tokyo University of Science. His specialty is biophysics, especially, nanobioscience and nanobiotechnology. One of his recent interests is nanoscopic research of hybrids of biomolecules and carbon nanotubes (CNTs). Unique structures and physical/chemical properties of the hybrids are promising in biological applications such as nanobiosensors and drug delivery.
Dr. Umemura received his B.S. degree in Physics from Nagoya University. His M.S. and Ph.D. degrees were given from Tokyo Institute of Technology. After working at several institutes/universities as a researcher in Japan and in China, he became a professor of Tokyo University of Science. Kagurazaka campus of Tokyo University of Science is located at the center of Tokyo, so five subway/railway lines reach in front of the campus.
Prof. Mikio Ito
Osaka University, Japan
Title: Sintering of electrically conductive powders by directly
applied current heating
Abstract: In the spark plasma sintering (SPS) process, the sample powder is conventionally packed in an electrically conductive die and punches, which are usually made of graphite. When electrically conductive metals, semiconductors and ceramics are sintered by the SPS, applied electric current is expected to flow through both of a graphite die and a powder compact during sintering. In this study, sintering of these electrically conductive powders was tried by a directly applied current sintering (a modified SPS), where an electrically insulative die was used instead of a conventional graphite die. In this modified SPS, the applied electric current is expected to flow through the powder compact entirely and sintering of a powder compact may also be possible through the Joule heating of sample powder itself. As electrical conductive powders, metallic Cu powder and semiconductive β-FeSi2 powder were sintered by the directly applied current sintering using carbon punches and an insulating quartz glass die. These powders were heated by directly applied current and their sintering behaviors were compared to those of the samples sintered by the conventional SPS (using carbon punches and a carbon die). When the metallic powder, Cu, was sintered, the densification behavior was almost the same as the case of the conventional SPS. On the other hand, in the case of FeSi2 powder, the transformation to the semiconductive β-FeSi2 phase occurred at a temperature lower than when sintered by the conventional SPS. After the transformation, the shrinkage of compact became larger and the density of a sintered body was higher as compared to those of the sample sintered by the conventional SPS. It was also found that the power consumption needed for densification in this modified SPS process was significantly lower than the conventional SPS.
Biodata: Dr. Mikio Ito is an associate professor in the Center for Atomic and Molecular Technologies, Graduate School of Engineering, Osaka University, Japan. He obtained his master’s(1994) and Doctor’s degrees(1997) in Engineering from Osaka University. His research focuses on development of materials processing, mainly powder processing, for functional materials with excellent performances, such as hard magnetic materials, thermoelectric materials etc. So far, he has produced nearly 140 publications. His resent research also focuses on SPS processing, and he is trying to clarify the effects of directly applied current sintering using SPS on densification behaviors of metal and ceramic powders.
Prof. Yoshihiko Uematsu
Gifu University, Japan
Dr. Yoshihiko Uematsu graduated from Department of
Mechanical Engineering, Kyoto University in 1990, and got M.E from
Graduate School of Engineering, Kyoto University in 1992. He completed
his PhD work entitled “Mode I delamination of unidirectionally carbon
fiber reinforced polymer matrix composite at elevated temperatures” at
Kyoto University in 1995. His work was about creep-fatigue interaction
effect on delamination behavior in CFRP. Then he worked as an Assistant
Professor in Department of Mechanical Engineering, Osaka University. His
research topics were about fatigue properties and fatigue crack
propagation of structural materials. During 2001-2002, he worked as a
guest researcher in Delft University of Technology, the Netherlands. In
2004, he moved to Gifu University as an Associate Professor in
Department of Mechanical Engineering, and became full Professor in 2011.
His paper entitled “Development of fatigue testing system for in-situ
observation by an atomic force microscope and small fatigue crack growth
behavior in α-brass” got the best paper award from The Japan Society of
Mechanical Engineers (JSME) in 2004. The paper entitled “Evaluation of
small fatigue crack initiation in Type 316 stainless steel by positron
annihilation spectroscopy” also got the best paper award from Japan
Society of Spring Engineers (JSSE) in 2016. His recent research
interests are about fatigue fracture mechanisms in lightweight alloys,
weldments, severely deformed materials, and so on. He published more
than 140 papers in peer-reviewed scientific journals. He is now a
director of the Society of Materials Science, Japan (JSMS), executive
secretary of Japan Welding Society, Tokai branch and representative
member of The Japan Society of Mechanical Engineers (JSME)
Prof. Xiaoqiang Cui
Jilin University, China
Dr. Xiaoqiang Cui has achieved his PhD from Changchun Institute of Applied Chemistry, Chinese Academy of Sciences (2002) under the supervision of Academician Xiurong Yang. He subsequently joined Prof. Changming Li`s group (2005) as a postdoctoral research fellow at Nanyang Technological University, Singapore and then worked as a research staff (2008) at National Institute of Advanced Industrial Science and Technology (AIST), Japan. Now he is a Changbai Mountain Scholars Professor and Deputy Dean at School of Materials Science and Engineering, Jilin University. His current research interests focus on the design of 2D nanomaterials for efficient electrocatalysis, photocatalysis, and beyond.