新加坡科技设计大学Prof. Ricky Ang学术报告

报告人简历：Lay Kee(Ricky)Ang has been with the Singapore University of Technology and Design(SUTD) , Singapore,since November 2011,where he is currently the Ng Teng Fong Professor for the SUTD-ZJU(Zhejiang University)IDEA(innovation,Design and Entrepreneurship Alliance);a professor under the Engineering Product Development;and SUTD's Director of Graduate Studies.Before joining STUD, he was a faculty member from the School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore.From 1999 to 2001,he was a LANL director postdoctoral fellow in the Applied Physics Division of the Los Alamos National Laboratory(LANL).His current research interests include quantum model of electron emission,electrical contact,charge transport at interface,novel Dirac material based devices(photodetectors, energy converters, hot-carriers devices,plasma thrusters)and computational methods using fractional models.He received his BS degree from National Tsing Hua University, Taiwan, in 1994,and his MS and PhD degrees from the Department of Nuclear Engineering and Radiological Science, University of Michigan, in 1996and 1999,respectively.

摘要：On the first part of this seminar, I will first present some new models related electrons emission and transport at graphene-interface and its contact with other materials. Due to the linear dispersion of graphene, it is found that the traditional models are no longer valid. Using these new models, various applications are proposed, such as energy harvesting for waste heat, photodetector at telecommunication wavelength and mobility characterization for 2D materials. Scaling laws have been constructed to show the smooth transition between the bulk materials and Dirac materials like graphene and others. On the second part of the seminar, we will show a new approach in fractional modeling for anisotropic, inhomogeneous, and disordered object. Under some approximations, a complicated object can be mapped into a non-integer dimension, which may simplify the calculation so to obtain analytical solution. Using this new technique, we have tested on some problems such as electron emission rough cathode, electron transport porous organic diode, laser absorption for a rough metal surface and 3D printing of complicated EM structures.