Title: Engineering metallic nanostructures for plasmonics and nanophotonics 

Speaker: Sang-Hyun Oh (University of Minnesota, Twin Cities)

8월 14일(화) 오후 3시, 301동 1112호

Abstract

Recent advances in nanofabrication technologies enable unprecedented capabilities to engineer metallic nanostructures and harness surface plasmons. Enhancing light-matter interactions in optical nanostructures can benefit broad applications in sensing, super-resolution imaging, spectroscopy, optical trapping, and photovoltaics. This presentation will first focus on a series of enabling technologies for nanophotonics, including focused ion beam lithography, nano-imprint lithography, atomic layer deposition, epitaxial growth of crystalline metal films, and in particular template stripping of ultrasmooth metals, to rapidly produce high-performance plasmonic devices. In the second part of the presentation, a number of practical applications will be discussed, including nanopore-based surface plasmon resonance (SPR) biosensing, surface-enhanced and tip-enhanced Raman spectroscopy (SERS & TERS), and sub-10-nm resolution lithography.

Biography: Sang-Hyun Oh obtained his BS degree in Physics from KAIST, Korea and PhD degree in Applied Physics from Stanford University, in 1996 and 2001, respectively. After postdoctoral research at Bell Laboratories in Murray Hill and at the University of California at Santa Barbara, he joined the Department of Electrical and Computer Engineering at the University of Minnesota, Twin Cities in 2006. He is currently an Associate Professor of Electrical and Computer Engineering and Biomedical Engineering, and runs a lab focused on plasmonics, nanofabrication, and biosensing. He is a recipient of the DARPA Young Faculty Award, the U.S. Office of Naval Research Young Investigator Award, National Science Foundation CAREER Award, and the ACS Petroleum Research Fund New Investigator Award.