应邓伟华教授的邀请，Alabama大学数学系赵山教授于近期访问我校，期间将作学术报告。
报告题目：Time domain interface methods for electromagnetic wave propagation in dispersive media
时 间：2015年6月9日上午 16:00
地 点：齐云楼911室
报告摘要：Dispersive media are ubiquitous in nature, such as in biological tissues, rocks, soils, ice, snow, and plasma. In such media, the dielectric permittivity is a function of frequency so that a broadband electromagnetic wave will propagate and attenuate in a frequency dependent manner. The interaction of such a wave with a dispersive interface, which separates a dispersive medium and a non-dispersive medium, is a very complex electromagnetic process. In particular, the electromagnetic field discontinuity across the dispersive interface is known to be frequency-dependent or time-varying in time domain simulations. In order to track these transient jumps, we have developed novel Maxwell systems for both transverse magnetic (TM) and transverse electric (TE) problems. Based on the auxiliary differential equations, both Debye and Drude dispersive materials have been studied. The resulting time-dependent jump conditions are enforced via the matched interface and boundary (MIB) scheme. High order convergences are numerically achieved in treating complex and dispersive interfaces. This is a joint work with my PhD student Duc Nguyen.
欢迎届时光临。
赵山教授简介：
Dr. Shan Zhao received the B.S. degree in mathematics from Lanzhou University, China, in 1997, and the Ph.D. degree in scientific computing from National University of Singapore, in 2003. From 2003 to 2006, he was a postdoctoral fellow with the Michigan State University. In 2006, he joined the Faculty of the Mathematics Department, University of Alabama, as an Assistant Professor. He has been promoted to the Associate Professor and Full Professor, respectively, in 2011 and 2015. Dr. Zhao’s current research interests include high-order methods for solving PDEs, computational electromagnetics and optics, high-order interface and boundary treatments, mathematical modeling of molecular surfaces in the implicit solvent theory, and fast biomolecular simulation. Dr. Zhao’s research has been supported continuously by the National Science Foundation (NSF) since 2006. He has published more than 40 peer-reviewed journal articles, and received over 1000 citations on the Google Scholar. Dr. Zhao currently serves in the editorial board for the Journal of Applied Mathematics and Molecular Based Mathematical Biology, and he has reviewed articles for more than 40 international journals.
应用数学与复杂系统重点实验室
兰州大学数学与统计学院
2015年6月5日
学校主页
