报告题目：Metasurfaces: an ideal platform to manipulate electromagnetic waves
报 告 人：周磊 教授
上海复旦大学物理系
主 持 人：孙洪波 教授、博士导师
报告时间：2014年10月 14日10:00 - 11:00
报告地点：唐敖庆楼D314报告厅
主办单位：电子科学与工程学院
集成光电子学国家重点联合实验室
周磊教授，1988年进入复旦大学，历经本科、硕士、博士阶段于1997年获博士学位。1997-2000，在日本仙台东北大学金属材料研究所从事博士后研究；2000-2004，在香港科技大学物理系做访问学者；2004 年9 月通过“复旦大学高层次人才引进计划”加盟复旦大学，任物理系教授。于2007 年获得“国家杰出青年基金”，于2009 年获聘教育部。自93年开始，从事电磁特异介质、磁性等多个领域从事理论及实验研究，在Nature Materials、Nano Lett等杂志发表论文110余篇，单篇他引次数最高500 多次，文章总引用近3000 次。
Abstract: The arbitrary control of electromagnetic (EM) waves is a key aim of photonic research. Conventional optical materials have limited abilities to manipulate EM waves due to their limited variation ranges of material parameters. Metasurfaces are ultra-thin inhomogeneous metamaterials composed by artificial deep-subwavelength planar meta-atoms arranged in specific macroscopic orders, and were found to exhibit extraordinary capabilities to control EM waves leading to many fascinating phenomena such as anomalous refraction/reflection, planar-lens focusing and optical vortex generalizations. In this talk, we will briefly review our recent efforts in employing meta-surfaces to control EM waves in various aspects. In particular, we will describe how to convert a propagating wave to a bounded surface wave with very high efficiency based on gradient meta-surfaces, and how to realize full-range active phase modulations using graphene-based meta-surfaces.
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