Circular polarization-selective optical,photothermal,and optofluidic effects in chiral metasurfaces  

作　　者：CUIPING MA PENG YU ZHIMIN JING YISONG ZHU PEIHANG LI WENHAO WANG HONGXING XU YANNING ZHANG LIANG PAN TAE-YOUL CHOI ARUP NEOGI ALEXANDER OGOVOROV ZHIMING WANG 

机构地区：[1]Institute of Fundamental and Frontier Sciences,University of Electronic Science and Technology of China,Chengdu 610054,China [2]Division of Physics and Applied Physics,School of Physical and Mathematical Sciences,Nanyang Technological University,Singapore 637371,Singapore [3]School of Physics and Technology,Center for Nanoscience and Nanotechnology,Wuhan University,Wuhan 430072,China [4]Department of Mechanical Engineering,University of North Texas,Denton,Texas 76207,USA [5]Department of Physics and Astronomy and Nanoscale and Quantum Phenomena Institute,Ohio University,Athens,Ohio 45701,USA

出　　处：《Photonics Research》2024年第2期331-340,共10页光子学研究（英文版）

基　　金：United States-Israel Binational Science Foundation(2018050);National Natural Science Foundation of China(62005037,62075034)。

摘　　要：Circular dichroism (CD) is extensively used in various material systems for applications including biological detection,enantioselective catalysis,and chiral separation.This paper introduces a chiral absorptive metasurface that exhibits a circular polarization-selective effect in dual bands-positive and negative CD peaks at short wavelengths and long wavelengths,respectively.Significantly,we uncover that this phenomenon extends beyond the far-field optical response,as it is also observed in the photothermal effect and the dynamics of thermally induced fluid motion.By carefully engineering the metasurface design,we achieve two distinct CD signals with high g factors (1) at the wavelengths of 877 nm and 1045 nm,respectively.The findings presented in this study advance our comprehension of CD and offer promising prospects for enhancing chiral light–matter interactions in the domains of nanophotonics and optofluidics.

关 键 词：CHIRAL CATALYSIS CIRCULAR 

分 类 号：O436.3[机械工程—光学工程]