Prof. Han-Yong Jeon
Inha University, South Korea
Prof. Han-Yong Jeon, male, geosynthetics/technical organic materials researcher, graduated from textile engineering department, Hanyang University in 1979. He worked for Hyejeon College, 1982-1990 and Howon University, 1990-1992, Chonnam National University, 1992-2005 and now works for Inha University. Since 1998, he is the director of Geosynthetics Institute (USA)-Korea Directory. From 2008-2012, he worked in International Geosynthetics Society as Council member (2006~2012) and he was the 6th president of Korean Geosynthetics Society (2011~2013). Also, he is members of ASTM D35 and ISO TC221 on geosynthetics from 1998. Now he is elected the 32nd President of Korean Fiber Society (2014~2015). He has published 117 papers and more than 742 papers in domestic and international conferences. Also, he wrote 18 texts including 'GEOSYNTHETICS’ and also published 98 papers in domestic & international journals. He has awards of Marquis Who'sWho - Science and Engineering in 2003~2014 and Top 100 Scientists in the World: 2005/2011 of IBC (International Biographical Centre, UK). Also, he got the 33rd Academy Award of Korean Fiber Society in 2006 and “Excellent Paper Award of 2012” by The Korean Federation of Science and Technology Societies. Area of Specialization Manufacturing, Application and Evaluation of Technical Organic Materials Manufacturing, Evaluation, Standardization & Regulation of Geosynthetics Polymeric Geocomposites etc.
Prof. Jun Ding
National University of Singapore, Singapore
Dr Jun DING obtained his Diplom Physics
from University of Wuppertal in 1986, and PhD degree from Ruhr University
Bochum, Germany in 1990. He has been working on magnetic and nanostructured
materials for more than 25 years. He is currently working as Professor at
Department of Materials Science & Engineering, National University of Singapore.
He has published over 350 journal papers with a total citation > 9000 and
H-Index = 52.
Prof Ding Jun has been working in the area of nanomagnetics and spintronics for many years. Recently, he has paid a particular attention on these materials and devices in different applications, including spintronic structures in information storage, nanoparticles in biomedical and environmental applications, magnetic sensors, magnetic energy harvesters and metamaterials. 3D printing will be used in the device fabrication. Recently, Prof Ding Jun’s research has been concentrated on additive manufacturing. His research has been focused on the development of starting mateirals for fabrication of multi-functioanal devices/structures of metal, ceramics, polymer and composite.
Prof. Shen-Ming Chen
National Taipei University of Technology, Taiwan
Prof. Shen-Ming Chen (h-index > 60) received his
PhD degrees in chemistry from National Taiwan University, Taipei, Taiwan. He was
a visiting postdoctoral fellow with the Institute of Inorganic Chemistry,
Friedrich-Alexander University Erlangen-Nuremberg, Germany in 1997. He joined
Department of Chemical Engineering, National Taipei Institute of Technology,
Taipei, Taiwan in 1985. He had been an associate professor of Department of
Chemical Engineering, National Taipei Institute of Technology, Taipei, Taiwan
from 1991 to 1997. Since August 1997, he has been a full professor of Department
of Chemical Engineering and Biotechnology, National Taipei University of
Technology. He has been the Dean (Curator) of library, National Taipei
University of Technology, Taiwan from 2000 to 2006 and the Director of
Extracurricular Activity, office of student affairs, National Taipei University
of Technology, Taiwan from 1995 to 2000.
Prof. Shen-Ming Chen has published over 500 research and review papers in internationalSCI journals. Some of their papers have been selected as the most cited papers in theJournal of Electroanalytical Chemistry and Biosensor & Bioelectronics. He received threetimes Distinguish Professor awards. He also received three times Outstanding Research Award from National Taipei University of Technology, Taiwan. He have edited or attended two books for NOVA publications titled “Nanostructured Materials for Electrochemical Biosensors” and “Biosensors: Properties, Materials and Applications” and contributed four book chapters.
His research interest includes nanocomposites, bionanomaterials, bionanotechnology, electrochemical biosensor, biosensors, bioelectrochemistry,, chemical materials, electroanalytical Chemistry, electrocatalysis and electroanalysis, photoelectrochemistry, metalloproteins, metalloporphyrins, nanotechnology, spectroscopic techniques, scanning probe techniques, quartz crystal microbalance, materials research, fuel cells, solar cell and photovoltaic cells.
Assoc. Prof. Pan Jisheng
National University of Singapore (NUS), Singapore
Dr. Jisheng Pan received his B. Sc in Physics from Zhejiang University in 1985 and his M. Sc in Nuclear Physics in 1988 from Shanghai Institute of applied Physics, Chinese Academy of Sciences, where he worked for 6 years in nuclear technology. He graduated in 1998 with his PhD in surface science from National University of Singapore. Currently, he is a senior scientist and photoemission spectroscopy (PES) group leader in Institute of Materials Research & Engineering, Agency for Science, Technology and Research (A*Star), Singapore. He is also an Adjunct Associate Professor in the Department of Physics, National University of Singapore. His areas of research interest are photoemission technique development, 2D materials for nanodevice application, surface nanostructure formation, characterization and application on catalysis, growth and characterization of thin films for microelectronic device fabrication, Ion beam pattern of semiconductor surfaces. Dr. Pan has authored or co-authored more than 250 refereed journal articles, one patent, two know-hows and given more than 80 presentations at international conferences. He has also provided surface analysis and consulting service to many local and international companies in Singapore. In the past 10 years his research team has studied many material system interfaces such as metal/semiconductor, semiconductor/semiconductor, high-k insulator/semiconductor using PES technique. In addition, His team developed various models for different interfaces to eliminate possible photoemission charge effect in affecting the data analysis to obtain accurate band alignment information. The knowledge in this area can significantly contribute to the understanding of the mechanisms governing the properties of semiconductor interface. Dr. Pan has received many awards including achievement award from A*Star Aerospace Programme, 2015; Assessor Award (Silver) from Singapore Accreditation Council, 2015; “Best of session” paper accreditation at Semicon West Exhibition (San Jose, USA) in 2002; the Natural Science Award of Chinese Academy of Sciences in 1991. He is a technical assessor of Singapore Accreditation Council (SAC); a technical committee member of ISO/TC 201 surface chemical analysis, Singapore; an associate editor of Surface and Interface Analysis; an editorial board member of Journal of Spectroscopy. He is also a member of many professional societies such as AVS (USA), MRS (Singapore), IPS (Singapore) and NSC (China).
Speech Title: Studies of nanostructured material surface and thin film interface by X-ray photoelectron spectroscopy
Abstract: It is well known that X-ray photoelectron spectroscopy (XPS) is a very powerful tool for understanding the nature of solid surfaces. Although many newly developing tools with high spatial resolution play important role in the analysis of individual nanostructured features of materials XPS is still considered as an essential tool for understanding several important aspects of nanostructured materials that cannot easily be observed using other techniques. However, the question of how the nanostructured material features impact XPS data have been heavily debated in the scientific community, which limits its application in characterization of nanostructured materials. For example, there is consistent observation of cluster-size-dependent binding energy (BE) shifts. But there is substantial disagreement over the assignment of these shifts to initial or final state effects. As a result, the measured PES data can’t directly match to the electronic property of clusters because among the initial and final state effects, only the initial state effect involves information of changes in the electronic structure before photoemission, and hence is directly related to nanostructured material properties and is relevant for understanding other chemical process and reactions. In the first part of the presentation, I will talk to you the issues raised specifically for XPS analysis of nanostructured materials and followed by the method to overcome limitations through some examples of application of XPS to study nanostructured materials. In the second part, band energy alignment of different material interfaces such as semiconductor/semiconductor, metal/semiconductor, metal/insulator, semiconductor/insulator, 2D material interfaces determination by XPS will be presented. The performance of any type of hetero-junction device is determined by band energy alignment (band offsets) of material interfaces which form the hetero-junction. Therefore, accurately determining heterojunction band offsets and tuning them to a desired application would have an obvious impact on the optimization of the devices. The effects of chemical shift, differential charging, band bending and photoemission final state on the XPS measurement accuracy and reliability will be discussed.
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