Title: Graphene and silicon nanophotonics
Speaker: Dr. You-Chia Chang 張祐嘉博士 (Department of Electrical Engineering, Columbia University, USA)

Time: 10:00 AM, January 12 (Friday), 2018

 

Place: Dr. Poe Lecture Hall, IAMS (本所浦大邦講堂　臺大校園內)

Host: Dr. Tsyr-Yan Yu  余慈顏博士 

 

 

Abstract:  Nanostructured materials have opened up many opportunities to control the light. In this talk, I will focus on two topics in graphene and silicon nanophotonics. First, I will talk about graphene-based hyperbolic metamaterials. These metamaterials consist of graphene-dielectric multilayers, exhibiting hyperbolic dispersion in the mid-infrared range. Second, I will talk about resonance-free light recycling in the silicon photonic platform. This light recycling approach, based on mode multiplexing, can reduce the power consumption of active photonic devices by 9 time.

 

Short Bio: You-Chia Chang (張祐嘉) is currently a postdoctoral research scientist in the Department of Electrical Engineering at Columbia University. He received his Ph.D. in Applied Physics at University of Michigan in 2016. He also received a M. S. degree in Applied Mechanics in 2004 and a B. S. degree in Mechanical Engineering in 2002 at National Taiwan University. He had worked as an associated researcher in Material and Chemical Research Laboratories of Industrial Technology Research Institute in Taiwan from 2004 to 2008. His research interests include silicon photonics, metamaterials, 2D materials, nanophotonics and ultrafast optics.