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Optical sorting of small chiral particles by tightly focused vector beams
Li, Manman1; Yan, Shaohui1; Zhang, Yanan1,2; Liang, Yansheng1; Zhang, Peng1; Yao, Baoli1
作者部门瞬态光学研究室
2019-03-12
发表期刊PHYSICAL REVIEW A
ISSN2469-9926;2469-9934
卷号99期号:3
产权排序1
摘要

The identification and separation of substances by chirality has always been an important problem in biomedical research and industry. Light beams carry optical momentum, and can exert optical force on any object they impinge due to the transfer of momentum. Different chiral objects will experience different optical forces when illuminated by the same light beam. We demonstrate here, based on the dipolar approximation, that a tightly focused vector beam can selectively trap and rotate small chiral particles in the transverse plane via the chirality-tailored optical forces. The radial optical force can transversely trap the chiral particles off axis or push them away depending on the real part of the chirality parameter, while the lateral optical force manifesting as the azimuthal optical force can drive the trapped particles to orbitally rotate with opposite chiral absorption in opposite directions. The study reported here may find applications in discriminating and separating chiral objects with specified chirality.

DOI10.1103/PhysRevA.99.033825
收录类别SCI ; EI
语种英语
WOS记录号WOS:000461050600010
出版者AMER PHYSICAL SOC
EI入藏号20191106640862
引用统计
被引频次:38[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/181661/31333
专题瞬态光学研究室
通讯作者Yao, Baoli
作者单位1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, 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. Optical sorting of small chiral particles by tightly focused vector beams[J]. PHYSICAL REVIEW A,2019,99(3).
APA Li, Manman,Yan, Shaohui,Zhang, Yanan,Liang, Yansheng,Zhang, Peng,&Yao, Baoli.(2019).Optical sorting of small chiral particles by tightly focused vector beams.PHYSICAL REVIEW A,99(3).
MLA Li, Manman,et al."Optical sorting of small chiral particles by tightly focused vector beams".PHYSICAL REVIEW A 99.3(2019).
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