Events Calendar

EE-EP Seminar

Speaker: Li Jun Jiang, Dept. of Electrical and Electronic Engineering, the University of Hong Kong

Talk Title: COMPUTATIONAL ELECTROMAGNETICS AND ITS APPLICATIONS FROM DC TO OPTICS

Abstract: Due to the pervasive use of computing powers, computational electromagnetics (CEM) has become an indispensable 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, I have been addressing above issues with novel solutions. 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. The numerical fast multipole algorithms and other divide and conquer strategies rooted from physical principles are employed to organize numerical solutions. At the low frequency, the decoupling of electronic and magnetic fields is employed to establish a stable system. For the broadband request, both evanescent and propagating properties are integrated to support a smooth transition from the circuit physics to wave physics. 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.


Biography: Lijun Jiang (S’01-M’04-SM’13) received his Bachelor degree from the Beijing University of Aeronautics and Astronautics, Master degree from Tsinghua University, and Ph.D from the University of Illinois at Urbana-Champaign in summer 2004. He worked as the application engineering at Hewlett-Packard (HP) in 1996-1999. From 2004 to 2009, he was postdoc/research staff member/senior engineer at IBM T.J. Watson Research Center, NY. Since the end of 2009, he has been an Associate Professor with the Department of Electrical and Electronic Engineering at the University of Hong Kong, where he received his tenure in Summer 2014. Since Sept. 2014, he has been a visiting scholar at the University of California, Los Angeles (UCLA) for his Sabbatical leave.

He has received many recognitions including the HP STAR Award in 1998 at HP, the Y.T. Lo Outstanding Research Award in 2004 at UIUC, the IBM Research Technical Achievement Award in 2008 at IBM Research, the Best Student Paper Award of 2014 ACES in Florida, and the Best Paper Award of 2014 IEEE EPEP in Oregon. He is the Associate Editor of IEEE Transactions on Antennas and Propagation, the Associate Editor of Progress in Electromagnetics Research, the Associate Guest Editor of the Proceedings of IEEE Special Issue in 2011~2012, IEEE Senior Member, and the member of many international academic associations. He was the Semiconductor Research Cooperation (SRC) Industrial Liaison for several academic projects. He was the TPC member, session organizer, or session chair of many international conferences. He was the co-organizer of HKU Computational Science and Engineering Workshops in 2010-2012, the TPC co-chair of the 7th International Conference on Nanophotonics (ICNP), the co-chair of International Workshop on Pulsed Electromagnetic Field at the Delft, the Netherlands, 2013, and the TPC co-chair of 14th International FEM Workshop. He serves as the reviewer for almost all major electromagnetics and microwave related journals.

His research interests focus on electromagnetics and optics, computational electromagnetics, IC signal/power integrity, IC EMC/EMI, microwave material engineering, etc.


Host: EE-Electrophysics

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 132

Audiences: Everyone Is Invited

Contact: Marilyn Poplawski