Plasmonic tweezers: for nanoscale optical trapping and beyond  

作　　者：Yuquan Zhang Changjun Min Xiujie Dou Xianyou Wang Hendrik Paul Urbach Michael G.Somekh Xiaocong Yuan 

机构地区：[1]Nanophotonics Research Center,Shenzhen Key Laboratory of Micro-Scale Optical Information Technology&Institute of Microscale Optoelectronics,Shenzhen University,Shenzhen 518060,China [2]Optics Research Group,Delft University of Technology,Lorentzweg 1,2628G Delft,The Netherlands

出　　处：《Light(Science & Applications)》2021年第4期475-515,共41页光（科学与应用)（英文版）

基　　金：the National Natural Science Foundation of China(91750205,61975128,61975129 and 61427819);Leading Talents of Guangdong Province Programme(00201505);Natural Science Foundation of Guangdong Province(2016A030312010 and 2019TQ05X750);and Science and Technology Innovation Commission of Shenzhen(KQTD2017033011044403,ZDSYS201703031605029,KQTD20180412181324255,JCYJ20180305125418079,andJCYJ2017818144338999).

摘　　要：Optical tweezers and associated manipulation tools in the far field have had a major impact on scientific and engineering research by offering precise manipulation of small objects.More recently,the possibility of performing manipulation with surface plasmons has opened opportunities not feasible with conventional far-field optical methods.The use of surface plasmon techniques enables excitation of hotspots much smaller than the free-space wavelength;with this confinement,the plasmonic field facilitates trapping of various nanostructures and materials with higher precision.The successful manipulation of small particles has fostered numerous and expanding applications.In this paper,we review the principles of and developments in plasmonic tweezers techniques,including both nanostructure-assisted platforms and structureless systems.Construction methods and evaluation criteria of the techniques are presented,aiming to provide a guide for the design and optimization of the systems.The most common novel applications of plasmonic tweezers,namely,sorting and transport,sensing and imaging,and especially those in a biological context,are critically discussed.Finally,we consider the future of the development and new potential applications of this technique and discuss prospects for its impact on science.

关 键 词：TRAPPING offering OPTICAL 

分 类 号：O43[机械工程—光学工程]