Speaker: Prof. Lei Zhou, Fudan University
Time & Date: 9:00 April. 13, 2018
Venue: Room 301 in the School of Physics
Abstract:
Metasurfaces, ultrathin metamaterials composed by array of planar “meta-atoms” with pre-designed electromagnetic (EM) properties, have attracted extensive attention recently. In this talk, I will give an overview on the development of metasurfaces focusing on the research works done in my own group. After briefly mentioning our early efforts on using homogeneous metasurfaces to manipulate EM wave properties, I will then describe our series of works on gradient metasurfaces, including making surface-plasmon couplers, constructing Pancharatnam-Berry metasurfaces with nearly 100% efficiencies in both reflection and transmission geometries, and combining graphene and metasurfaces to achieve wide-range phase modulations.
