Chirality-assisted lateral momentum transfer for bidirectional enantioselective separation

查看全文 作　　者：Yuzhi [1,2]Shi;Tongtong [3,4,5]Zhu;Tianhang [3]Zhang;Alfredo [6]Mazzulla;Din Ping [7]Tsai;Weiqiang [5]Ding;Ai Qun [2]Liu;Gabriella [6,8]Cipparrone;Juan Jose [9]Saenz;Cheng-Wei [3]Qiu

机构地区：[1]School of Mechanical Engineering,Xi’an Jiaotong University,Xi’an 710049,China;[2]School of Electrical and Electronic Engineering,Nanyang Technological University,Singapore 639798,Singapore;[3]Department of Electrical and Computer Engineering,National University of Singapore,Singapore 117583,Singapore;[4]School of Optoelectronic Engineering and Instrumentation Science,Dalian University of Technology,Dalian 116024,China;[5]School of Physics,Harbin Institute of Technology,Harbin 150001,China;[6]CNR-NANOTEC,LiCryL and Centre of Excellence CEMIF.CAL,Ponte P.Bucci,Cubo 33B,87036 Rende(CS),Italy;[7]Department of Electronic and Information Engineering,The Hong Kong Polytechnic University,Hung Hom,Kowloon,Hong Kong,China;[8]Department of Physics,University of Calabria,Ponte P.Bucci,Cubo 33B,87036 Rende(CS),Italy;[9]Donostia International Physics Center,20018 Donostia-San Sebastian,Spain

出　　处：《Light(Science & Applications)》索引2020年第9卷第1期,共12页

基　　金：the financial support from the Ministry of Education,Singapore(Project No.R-263-000-D11-114);from the National Research Foundation,Prime Minister’s Office,Singapore under its Competitive Research Program(CRP award NRFCRP15-2015-03 and NRFCRP15-2015-04);the Singapore National Research Foundation under the Competitive Research Program(NRF-CRP13-2014-01);the Incentive for Research&Innovation Scheme(1102-IRIS-05-04)administered by PUB;the Fundamental Research Funds for the Central Universities(DUT19RC(3)046);supported by the Spanish Ministerio de Economia y Competitividad(MICINN)and European Regional Development Fund(ERDF)Project FIS2015-69295-C3-3-P;the Basque Dep.de Educacion Project PI-2016-1-0041. 摘　　要：Lateral optical forces induced by linearly polarized laser beams have been predicted to deflect dipolar particles with opposite chiralities toward opposite transversal directions.These“chirality-dependent”forces can offer new possibilities for passive all-optical enantioselective sorting of chiral particles,which is essential to the nanoscience and drug industries.However,previous chiral sorting experiments focused on large particles with diameters in the geometrical-optics regime.Here,we demonstrate,for the first time,the robust sorting of Mie(size~wavelength)chiral particles with different handedness at an air–water interface using optical lateral forces induced by a single linearly polarized laser beam.The nontrivial physical interactions underlying these chirality-dependent forces distinctly differ from those predicted for dipolar or geometrical-optics particles.The lateral forces emerge from a complex interplay between the light polarization,lateral momentum enhancement,and out-of-plane light refraction at the particle-water interface.The sign of the lateral force could be reversed by changing the particle size,incident angle,and polarization of the obliquely incident light. 关键词：MOMENTUM CHIRAL OPTICS

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Chirality-assisted lateral momentum transfer for bidirectional enantioselective separation

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