Manipulation of low-refractive-index particles using customized dark traps  

作　　者：MINRU HE YANSHENG LIANG XUE YUN SHAOWEI WANG TIANYU ZHAO LINQUAN GUO XINYU ZHANG SHIQI KUANG JINXIAO CHEN MING LEI 

机构地区：[1]MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter,School of Physics,Xi’an Jiaotong University,Xi’an 710049,China [2]State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China

出　　处：《Photonics Research》2024年第6期1334-1343,共10页光子学研究（英文版）

基　　金：National Key Research and Development Program of China(2022YFF0712500,2023YFF0722600);National Natural Science Foundation of China(62135003,62205267);Innovation Capability Support Program of Shaanxi(2021TD-57);Natural Science Basic Research Program of Shaanxi Province(2022JZ-34,2024JC-YBMS494);Fundamental Research Funds for the Central Universities(xzy012023033).

摘　　要：Low-refractive-index particles play significant roles in physics,drug delivery,biomedical science,and other fields.However,they have not attained sufficient utilization in active manipulation due to the repulsive effect of light.In this work,the establishment of customized dark traps is demonstrated to fulfill the demands of versatile manipulation of low-refractive-index particles.The customized dark traps are generated by assembling generalized perfect optical vortices based on the free lens modulation method,by which the beams’shape,intensity,and position can be elaborately designed with size independent of topological charge.Using the customized dark traps with high quality and high efficiency,rotation along arbitrary trajectories with controllable speed,parallel manipulation,and sorting of low-refractive-index particles by size can be realized.With unprecedented flexibility and quality,the customized dark traps provide tremendous potential in optical trapping,lithography,and biomedicine.

关 键 词：refractive ROTATION VERSATILE 

分 类 号：O469[理学—凝聚态物理]