Metamaterials and metadevices for extreme control and manipulation of light

Junsuk Rho (?埈錫)

浦项科技大学（POSTECH）

地点: 物理楼中212教室

时间: 12 月 05 日 (星期五) 上午10:00

Metamaterials, artificially structured nanomaterials, have enabled unprecedented phenomena such as invisibility cloaking. In this talk, I will discuss our effort in achieving the unique optical property overcoming diffraction limit to achieve extraordinary metamaterials. First, I will present super-resolution imaging device called “hyperlens”, which is the first experimental demonstration of near- to far-field imaging at visible light with resolution beyond the diffraction limit in two lateral dimensions. Second topic is another unique application of metamaterials for miniaturizing optical cavity, a key component to make lasers, into the nanoscale for the first time. Third, I will show the chirality-assisted photo-induced switching of reconfigurable negative index metamaterial device. Finally, I will show how those proof-of-concepts in scientific level can be applied to real engineering applications. It includes flying head lithography and hierachical fabrication to achieve true 3D/bulk metamaterials & metadevices

Dr. Junsuk Rho is currently an assistant professor with a double appointment in the Departments of Mechanical Engineering and the Chemical Engineering at POSTECH, Korea. He received Ph.D. degree in Mechanical Engineering and Nanoscale Science & Engineering at the University of California, Berkeley. Before joining POSTECH, he worked as the Ugo Fano fellow at Lawrence Berkeley National Laboratory and Argonne National Laboratory. Dr. Rho has published 10 high impact peer-reviewed journal papers including Science, Nature Photonics and Nature Communications.

联 系 人 马仁敏(6276 0275)