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Enantioselective optical trapping of chiral nanoparticles by tightly focused vector beams
Li, Manman1; Yan, Shaohui1; Zhang, Yanan1,2; Zhang, Peng1; Yao, Baoli1
作者部门瞬态光学研究室
2019-08-01
发表期刊JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
ISSN0740-3224;1520-8540
卷号36期号:8页码:2099-2105
产权排序1
摘要

Two enantiomers (mirror images) can show drastically different behaviors, resulting in the enantiomers' identification and separation being in high demand in biomedical research and industry. Here, we introduce an optical approach in which, by using a tightly focused vector beam with radially varied polarizations, we realize the selective trapping of both enantiomeric forms. Numerical results show that such a focused field exhibits bifocal spot intensity distribution and can simultaneously stably trap one enantiomer in one focal spot and the other enantiomer in the other spot in three dimensions, achieving an effective separation of the chiral entities. The trapping distance and position of the enantiomeric pairs can be changed by separately varying the magnitude and sign of the polarization topological charge of the vector beam. And the difference in trapping potentials of the particles with different chirality provides a further identification of the chirality. Our theory indicates that the enantiomers' identification and separation can be mediated by the same incident beam, providing a possible route to detect, separate, and manipulate chiral objects at nanometer scales. (C) 2019 Optical Society of America

DOI10.1364/JOSAB.36.002099
收录类别SCI ; EI
语种英语
WOS记录号WOS:000478057200037
出版者OPTICAL SOC AMER
EI入藏号20193507376977
引用统计
被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/31623
专题瞬态光学研究室
通讯作者Yao, Baoli
作者单位1.Chinese Acad Sci, State Key Lab Transient Opt & Photon, Xian Inst Opt & Precis Mech, Xian 710119, Shaanxi, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Li, Manman,Yan, Shaohui,Zhang, Yanan,et al. Enantioselective optical trapping of chiral nanoparticles by tightly focused vector beams[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS,2019,36(8):2099-2105.
APA Li, Manman,Yan, Shaohui,Zhang, Yanan,Zhang, Peng,&Yao, Baoli.(2019).Enantioselective optical trapping of chiral nanoparticles by tightly focused vector beams.JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS,36(8),2099-2105.
MLA Li, Manman,et al."Enantioselective optical trapping of chiral nanoparticles by tightly focused vector beams".JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS 36.8(2019):2099-2105.
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