2020/10/29(Thu) 11:00 -12:00 五樓第一會議室 5F, 1st Meeting Room
Title
Exploring Two-dimensional Materials through Optical Spectroscopy
Speaker
Dr. Jason Shih An Horng (Physics Department, University of Michigan)Abstract
Since the discovery of graphene, layered van der Waals materials have drawn significant attention in condensed matter physics as well as electro-optical applications due to their strong light-matter interactions in the two-dimensional limit. Monolayer transition metal dichalcogenides (TMDs) exhibits tightly bound excitons with low scattering loss, providing an ideal platform to study manybody physics. In this talk, I will present our studies on collective excitonic phenomena in TMDs through various optical spectroscopy, including controlling exciton dynamics through photonic engineering and the observation of bi-excitonic transitions through the optical Stark effect. At last, I will demonstrate a versatile optical imaging technique for bio-electricity detection using the high sensitivity from graphene.
Language
演講語言 (Language): in English