時 間：2023年6月5日（周一）下午14:00-17:00

地 點：逸夫樓A224

主講人：周磊

Abstract：

Metamaterials are artificial materials constructed by subwavelength-sized microstructures (e.g., meta-atoms) exhibiting tailored electromagnetic properties. Although metamaterials exhibit unprecedented capabilities to control EM waves, the inevitable wave-transportation losses in such complex media hinder their practical applications. Very recently, metasurfaces, the two-dimensional version of metamaterials composed by planar meta-atoms arranged in specific macroscopic orders, have attracted extensive attention, as they can not only largely avoid the losses but also exhibit even stronger capabilities to control EM waves. In this Colloquium, I will present a brief overview on the historical development of this fast-developing research field, focusing particularly on our recent efforts in employing meta-surfaces to control EM waves in various aspects. Specifically, I will describe how to realize utilize gradient metasurfaces to convert propagating waves surface waves with nearly 100% efficiency and how to realize photonic spin-Hall effects with carefully designed meta-surfaces with nearly 100% efficiency in both reflection and transmission geometries. Finally, I will introduce our latest efforts and my perspectives on metasurfaces.

周磊，1997年獲複旦大學博士學位，随後在日本東北大學（1997-2000）及香港科技大學（2000-2004）從事博士後研究，2004年加盟複旦大學物理學系，2020年起擔任物理學系主任。獲國家傑青（2007），長江學者（2010），萬人計劃“領軍人才”（2017），上海市自然科學牡丹獎（2015），上海市領軍人才（2016），上海市自然科學一等獎（2016），美國光學學會會士（OSA Fellow，2019），上海市科技精英提名獎（2019），2019年度國家自然科學二等獎，全球高被引學者（2019-）等獎勵或榮譽。在電磁超構材料等領域從事理論實驗研究，發表包括Nature Materials在内的論文200餘篇，累計被引 18000餘次，單篇最高引用1700餘次。作為大會主席組織超構材料相關的國際會議8次，作為中方主席發起并組織中日韓三國超材料學術論壇，100餘次在國際會議上做大會/主旨/特邀報告。擔任《Photonics Insights》的創刊共主編，《Nanophotonics》的Managing Editor，《Phys. Rev. Mater.》，Opto-electronic Science》等期刊的編委會成員。

歡迎廣大師生參加！

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