报 告 题 目：Opto-thermal effect in plasmonic nanomaterials: from loss to gain

报   告  人：Dr. Linhan Lin, The University of Texas at Austin, USA

时      间：2017年11月2日（周四）下午15:00

地      点：南楼2层会议室

邀  请  人：葛广路 研究员

报告摘要：

Light-matter interaction at nanoscale leads to tremendous opportunities for the development of novel plasmonic nanodevices. However, the intrinsic loss in metal, which arises from the Joule heating, is regarded as one of the critical limitations in plasmonics. In this talk, I will present how to reduce the loss in plasmonics through incorporation of plasmonic-photonic interaction to strengthen the light-matter interaction. Specifically, we demonstrated all-optically rewritable waveguides through rational design of these hybrid plasmonic materails.  Further, I will show that the loss can be turned into gain, i.e., the optical heating in metal can be harnessed to develop new optical manipulation techniques (e.g., thermophoretic tweezers) beyond optical tweezers, which feature low optical power and simple optics. Several applications, including live cell manipulation, in-situoptical sensing, and optical assembly of colloidal mater, were developed based on the thermophoretic tweezers.

报告人简介：

Dr. Linhan Lin received both his B.S. (2008) and Ph.D. (2013) in the School of Materials Science and Engineering, Tsinghua University. He started his postdoctoral research in Prof. Alex Yi’s group in University of Michigan-Dearborn in 2013. From 2014, he joined Prof. Yuebing Zheng’s group as a postdoctoral researcher in Texas Materials Institute (TMI) at The University of Texas-Austin. His research interests include light-matter interaction, nano-optics, optical manipulation, as well as thermophoresis. He has published 29 papers on the Journal including Science Advances, Nano Letters and ACS Nano. He owns 5 U.S. patent applications on the innovation of novel optical manipulation techniques.