Unraveling the optomechanical nature of plasmonic trapping  

作　　者：Pau Mestres Johann Berthelot Srdjan S Aćimović Romain Quidant 

机构地区：[1]ICFO-Institut de Ciencies Fotoniques,The Barcelona Institute of Science and Technology,08860 Barcelona,Spain [2]Present address:Aix Marseille Université,CNRS,Centrale Marseille,Institut Fresnel UMR 7249,13397 Marseille,France [3]Present address:Department of Applied Physics,Chalmers University of Technology,Fysikgränd 3,SE-41296 Göteborg,Sweden [4]ICREA-InstitucióCatalana de Recerca i Estudis Avançats,08010 Barcelona,Spain

出　　处：《Light(Science & Applications)》2016年第1期708-713,共6页光（科学与应用)（英文版）

基　　金：support from the FundacióPrivada Cellex,the Severo Ochoa program,the Spanish Ministry of Economy and Competitiveness(grant FPU-AP-2012-3729 and FIS2013-46141-P);the European Research Council through Consolidator grant QnanoMECA(#64790).

摘　　要：Noninvasive and ultra-accurate optical manipulation of nanometer objects has recently gained interest as a powerful tool in nanotechnology and biophysics.Self-induced back-action(SIBA)trapping in nano-optical cavities has the unique potential for trapping and manipulating nanometer-sized objects under low optical intensities.However,thus far,the existence of the SIBA effect has been shown only indirectly via its enhanced trapping performances.In this article,we present the first time direct experimental evidence of the self-reconfiguration of the optical potential that is experienced by a nanoparticle trapped in a plasmonic nanocavity.Our observations enable us to gain further understanding of the SIBA mechanism and to determine the optimal conditions for boosting the performances of SIBA-based nano-optical tweezers.

关 键 词：NANOPHOTONICS OPTOMECHANICS optical trapping PLASMONICS 

分 类 号：TB3[一般工业技术—材料科学与工程]