2006, PhD, University of Illinois, Urbana Champaign. Since 2009, Associate Professor, Department of Materials Science and Engineering, KAIST. Co-Author of SCI papers, for Science, Nature Materials, Nano Letters, Advanced Materials, ACS Nano, Advanced Energy Materials, Advanced Functional Materials. Some 120 patents, 40 of which are licensed. Research interests: flexible and nano devices for bio, energy and electronics.