题目: From absorbers to lenses: designing highly-efficient metasurfaces
主讲人: Mitchell Guy Kenney（PhD, MSci）
主持人: 洪延 副研究员
时 间: 2019年3月5日（周二），上午9点30分
地 点: 沙河校区主楼中322
Mitchell Guy Kenney，伯明翰大学物理学博士，格拉斯哥大学博士后，研究方向为超表面，共发表11篇国际期刊，其中以第一作者身份发表 Nature Nanotechnology一篇、两篇Advanced Materials两篇, ACS Photonics一篇。文献被引次数977，H指数7。文章总影响因子123.6，平均每篇论文影响因子11.2。担任ACS Photonics, Royal Society Open Science, Optics Express, Optical Materials Express, Journal of Applied Physics, APL Photonics, Annalen der Physik期刊审稿人。
Metasurfaces, the 2D variant of metamaterials, have been at the forefront of optics research in the past decade, due to the simplicity and flexibility of their design, and the impact of novel devices which can be realised. Primarily designed using plasmonic effects – fabricated from patterned metallic nanostructures – metasurfaces suffered from poor performance when carrying out the desired response. This is due to the low interaction of light when transmitted through metallic thin films, where the efficiency is typically limited to ~15% or less.
Here, I will talk about my work carried out during the last 5 years at both the University of Birmingham (Prof. Shuang Zhang) and, more recently, at the University of Glasgow (Prof. David Cumming), on developing metasurfaces which exhibit very high performance utilising reflection or transmission operation.