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.
"Transparent Conductors and Semiconductors: Synthesis, Properties and Applications"
ABSTRACT: In many applications such as solar cells, displays for mobile phones, computers and televisions, optically transparent conductors are needed. Transparent oxide semiconductors are fundamentally important for realizing such advanced applications. To be transparent optically, the material needs to be of wide band gap of 3 eV and above. Such a wide gap is typically that of an insulator. Therefore, it is necessary to generate shallow level defects serving as donor or acceptor for making the material conductive. One of the most challenging and difficult parts of the work is the fabrication of highly conductive p-type transparent compound semiconductors, whose success can lead to new generation of devices and applications. The p-type TSOs we have fabricated successfully include Cu-Al-O, ZnO, and Cu2O, etc. The n-type TSOs and TCOs we have successfully fabricated include nanostructured or/and amorphous ZnO, SnO2, IZO (indium zinc oxide), and ITO (indium tin oxide) thin films. Transparent p-n junction diodes have also been succeeded and investigated.
In this talk, I will discuss transparent conducting conductors and
semiconductors. The fabrication of the material will be introduced.
Various characterization methods will be described for the determination
of different important parameters.
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.
"Oxidation/reduction of carbon nanotubes monitored by near-infrared photoluminescence and absorbance"
ABSTRACT: Nanocarbons such as carbon nanotube, carbon fullerene, and graphene are promising nanomaterials for various biological applications. For example, several research groups proposed new methods of detecting DNA mismatch using carbon nanotubes. Medical applications such as drug delivery systems were also reported by several authors. In this paper, we demonstrated evaluation of antioxidant ability of Japanese tea and catechin using DNA wrapped carbon nanotubes. Because near-infrared absorbance and near-infrared photoluminescence of carbon nanotubes are sensitively changed by oxidation and reduction, the antioxidant ability of Japanese tea and catechin were well monitored as functions of times and concentrations. When concentration of catechin was high, photoluminescence spectra showed drastic responses in contrast to absorbance spectra. However, when the catechin concentration was low, the effects of catechin on carbon nanotube oxidation/reduction were well monitored by absorbance spectra. Our results showed advantages of combination of photoluminescence and absorbance spectra to enhance specific optical responses of carbon nanotubes for biological applications.
Prof. Kenji OGINO
Tokyo University of Agriculture and Technology, Japan
Dr. Kenji Ogino is a full professor of Tokyo University of Agriculture and Technology. His research has concentrated on synthesis of semiconducting polymers and applications to photorefractive, electroluminescent, and photovoltaic devices. Especially he is interested in block copolymers, which can form microphase separated nanostructures in thin films.
Dr. Ogino received his B.S. degree from Department of Reaction Chemistry, the University of Tokyo in 1986. His Ph.D. degree was given from the University of Tokyo in 1995. He started his carrier at Tokyo University of Agriculture and Technology as a research associate in 1986, and was appointed to current position in 2005. In 1997, he spent one year at C. K. Ober research group in Cornell University as a visiting scientist. He is also a vice-president of the Society of Fiber Science and Technology, Japan.
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)
"Fatigue properties of friction stir processed materials"
ABSTRACT: Friction stir processing (FSP) is a newly-developed microstructural modification technique for light-weight materials with low melting points. In this method, a tool consisting of shoulder and threaded-probe is used. The rotating tool is plunged into the material and linearly travels inducing sever plastic deformation (SPD). Basically, microstructural homogenization, grain refinement, breaking up of large defects, etc., would take place due to the SPD, and the mechanical properties could be improved. In the present work, FSP was applied to the non-combustible wrought magnesium (Mg) alloy, AMX602. AMX602 has superior non-combustibility achieved by the addition of calcium (Ca) into Mg matrix, but also has inhomogeneity of macrostructure due to the precipitation of Ca-based intermetallic compounds (IMCs). Thus FSP was applied for the homogenization of microstructure. Furthermore, FSP was applied to the conventional cast Mg alloy, AZ91, to fabricate Mg-based metallic matrix composite (MMC). Reinforcing fivers were dispersed into the matrix by FSP. Finally fatigue properties of those materials were investigated in detail, because fatigue performances are quite important to use those materials as mechanical components.
Prof. Huanyu Dou
Texas tech University Health Sciences Center El Paso, USA
"Macrophages Targeted Gene
ABSTRACT: Macrophages targeted cDNA delivery has received growing attention for vaccine, anti-cancer, anti-inflammation and neuroprotection gene therapies. The transfection of cDNA to primary macrophages was particularly difficulty and remain a major challenges for clinic application and laboratory research. Methods: We synthesized PEI lipids as surfactant in the PLGA nanoparticles (NPs) and then packaged cDNA inside as NPs-cDNA complexes. NPs were with conjugated with rhodamine (red) and cDNA of human IL4 was labelled by YOYO-1 (green). Human peripheral blood CD14+ Monocytes were cultured with supplement of 1000 U/ml highly purified recombinant human macrophage colony stimulating factor (MCSF) to differentiate into macrophages (MDM). Nanosizer, TAM and HPLC assays were used to characterize NPs-Cdna complexes. NPs-IL4 complexes uptake and release by MDM were examined by microscopy, SEM, flow cytometer assays. The expression of IL4 was determined in mouse bone marrow derived macrophages (BMM) by ELISA. Results: Image analysis of fluorescence labeled NPscDNA complexes showed that human peripheral monocytes derived macrophages (MDM) were quickly taken by after 30 minutes of treatment. More impartment, the cDNA (green) was transport out of the lysosomes (red) and separated from the colocalization of phago-lysosome and NPs-IL4 complexes at 60 minutes of post treatment. Human MDM treated with NPs-IL4 complexes at ratio of 1:20 (NPs:cDNA) were exhibited the significant transfection (45.4%). The expression of human IL4 was gradually increased at 1, 3 and 5 days and consistently detected up to 25 days. NPs-IL4 complexes treated mice showed significant expression of human IL-4 in splenic macrophages. Conclusion: Convenient methods for the preparation of cDNA delivery platforms by NP-IL4 complexes were efficiently transfected human MDM in vitro and mouse splenic macrophages in vivo. The expression of IL-4 regulated the macrophage plasticity and altered the functional secretions. The results strongly demonstrated the promise potential of clinic use.