Introduction

Due to the pervasive use of computing powers, computational electromagnetics (CEM) has become an indispensible technology for maintaining Moore’s law in semiconductor industries, engineering new electromagnetic and optical materials, characterizing the next generation nano devices, and accelerating future communication systems. Facing surging scientific and engineering demands, the complexity of physics in today’s CEM researches is unprecedented. Because of close connections between electromagnetics and optics, CEM generates essential methodologies and insights to new advances from static circuits, microwave systems, to THz and optical devices.  

There are several primary challenges that CEM is facing: complex environments, extreme frequencies, and multidisciplines. The first two are heavily referenced and employed by the last one for advances in optoelectronics and nano scale devices. By developing physical models and numerical engines, we could extend computational electromagnetics from DC to optical regime. New integral equation methods in the frequency domain and discontinuous Galerkin’s methods in the time domain have been proposed by us to characterize problems that are homogeneous or inhomogeneous, linear or nonlinear, isotropic or anisotropic, deterministic or stochastic, etc. At the low frequency, the decoupling of electronic and magnetic fields is employed to establish a stable system. By further pushing up the frequency, novel computational solutions for optoelectronic devices and graphene have been successfully developed to characterize the electromagnetic field with them. By demonstrating computational solutions ranging from DC, microwave, THz, to optical applications, the talk will conclude with future research discussions.

 

About Speaker

Lijun Jiang (S’01-M’04-SM’13) received the B.S. degree in electrical engineering from the Beijing University of Aeronautics and Astronautics in 1993, the M.S. degree from the Tsinghua University in 1996, and Ph.D from the University of Illinois at Urbana-Champaign in 2004. From 1996 to 1999, he was an application engineer with the Hewlett-Packard Company. Since 2004, he has been the postdoctoral researcher, the research staff member, and the senior engineer at IBM T.J. Watson Research Center. Since the end of 2009, he is an Associate Professor with the Department of Electrical and Electronic Engineering at the University of Hong Kong. From Sept. 2014 to Mar. 2015, he is also a visiting scholar at the University of California at Los Angeles.

He is the IEEE Senior Member, the Associate Editor of IEEE Transactions on Antennas and Propagation, the Editor of Progress in Electromagnetics Research, the Associate Guest Editor of the Proceedings of IEEE Special Issue in 2011~2012, an IEEE AP-S Member, an IEEE MTT-S member, an ACES member, and a member of Chinese Computational Electromagnetics Society. He has been serving for many international conferences as chair, co-chair, session organizers, or session chairs, and for primary electromagnetics and microwave related journals as reviewers.

His research interests focus on electromagnetics, computational electromagnetics, IC

signal/power integrity, IC EMC/EMI, antennas, multi-physics modeling, etc.

time and place April 17th, Fri. 10:00 AM, Rohm Building 10-208