題目: From absorbers to lenses: designing highly-efficient metasurfaces
主講人: Mitchell Guy Kenney（PhD, MSci）
主持人: 洪延 副研究員
時 間: 2019年3月5日（周二），上午9點30分
地 點: 沙河校區主樓中322
Mitchell Guy Kenney，伯明翰大學物理學博士，格拉斯哥大學博士后，研究方向為超表面，共發表11篇國際期刊，其中以第一作者身份發表 Nature Nanotechnology一篇、兩篇Advanced Materials兩篇, ACS Photonics一篇。文獻被引次數977，H指數7。文章總影響因子123.6，平均每篇論文影響因子11.2。擔任ACS Photonics, Royal Society Open Science, Optics Express, Optical Materials Express, Journal of Applied Physics, APL Photonics, Annalen der Physik期刊審稿人。
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.