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Graphene Photonics and Electronics

Fengnian Xia (IBM T. J. Watson Research Center, USA)
Fri, 05/07/2013 - 2:30pm to 3:30pm
S13-M01-11 (Physics Conference Room)
Ji Wei
Event Type: 


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, bandgap engineering in graphene, and their possible impacts on electronics based on other twodimensional materials such molybdenum disulfide.

Speaker's Bio: Fengnian Xia received the B.Eng. 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 currently is a Research Staff Member. His current research focuses on nanophotonics and nanoelectronics using both conventional and emerging materials such as graphene, carbon nanotubes, silicon, germanium, III-Vs, and various combinations of them. He is also actively involved in carrier transport research in low-dimensional systems. Dr. Xia received an IBM corporate award, three IBM research division level awards, and many IBM invention achievement awards. In 2011, he was selected by MIT technology review magazine as a top young innovator under the age of 35.



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