MSE Seminar - Professor Fengnian Xia
Title: Graphene Nanophotonics and Nanoplasmonics
Graphene has been intensively explored by physicists and engineers due to its unique electronic and photonic properties. In this talk, I will first address the physics of light-graphene interaction within the single-electron framework, followed by a discussion of light excitation of collective oscillations of the carriers, i.e., plasmons in graphene. I will then cover a variety of photonic devices based on these two mechanisms of light-graphene interaction, such as high-bandwidth photodetectors, optical modulators, electro-magnetic wave shielding, optical filters, and linear polarizers. Finally I will talk about the carrier transport at metal-graphene junction and a recently emerged two-dimensional material black phosphorus.
Professor Fengnian Xia received the B.S. degree with the highest honor in electronics engineering from Tsinghua University, Beijing, China, in 1998 and M.A. and Ph.D. degrees in electrical engineering from Princeton University, Princeton, NJ, USA in 2001 and 2005, respectively. He joined IBM Thomas J. Watson research center in Yorktown Heights, NY, USA as a postdoc in March 2005, and was a Research Staff Member before he started at Yale University as an assistant professor in September 2013. His current research focuses on nanophotonics and nanoelectronics using both conventional and emerging materials such as graphene, carbon nanotubes, metal dichalcogenides, silicon, germanium, III-Vs, and the various combinations of them. He is also actively pursuing carrier transport research in one- and two-dimensional systems.
Host: Wenshan Cai