Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Enantioselective optical trapping of chiral nanoparticles by tightly focused vector beams

Not Accessible

Your library or personal account may give you access

Abstract

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.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Selective trapping of chiral nanoparticles via vector Lissajous beams

Hao Wu, Ping Zhang, Xuejing Zhang, Yi Hu, Zhigang Chen, and Jingjun Xu
Opt. Express 30(3) 3592-3600 (2022)

Enantioselective optical trapping of chiral nanoparticles using a transverse optical needle field with a transverse spin

Ying Li, Guanghao Rui, Sichao Zhou, Bing Gu, Yanzhong Yu, Yiping Cui, and Qiwen Zhan
Opt. Express 28(19) 27808-27822 (2020)

Electromagnetic trapping of chiral molecules: orientational effects of the irradiating beam

David S. Bradshaw and David L. Andrews
J. Opt. Soc. Am. B 32(5) B25-B31 (2015)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (11)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved