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Optical separation and discrimination of chiral particles by vector beams with orbital angular momentum

Chirality describes a reduced symmetry and abounds in nature. The handedness-dependent response usually occurs only when a chiral object interacts with another chiral entity. Light carrying orbital angular momentum (OAM) is inherently chiral due to the helical wave front. Here, we put forward a sche...

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Detalles Bibliográficos
Autores principales: Li, Manman, Yan, Shaohui, Zhang, Yanan, Chen, Xu, Yao, Baoli
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9418904/
https://www.ncbi.nlm.nih.gov/pubmed/36132368
http://dx.doi.org/10.1039/d1na00530h
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author Li, Manman
Yan, Shaohui
Zhang, Yanan
Chen, Xu
Yao, Baoli
author_facet Li, Manman
Yan, Shaohui
Zhang, Yanan
Chen, Xu
Yao, Baoli
author_sort Li, Manman
collection PubMed
description Chirality describes a reduced symmetry and abounds in nature. The handedness-dependent response usually occurs only when a chiral object interacts with another chiral entity. Light carrying orbital angular momentum (OAM) is inherently chiral due to the helical wave front. Here, we put forward a scheme that enables optical separation and simultaneous discrimination of single chiral particles using focused vector beams with OAM. Such focused vector vortex beams carrying radial-splitting optical chirality can selectively trap one enantiomer inside or outside the intensity maxima depending on the sign of the OAM. The particles with different chirality parameters can be trapped on different orbits and experience enhanced orbital motion. Moreover, the magnitude of OAM as well as the size of particle plays an important role in the chiral separation and discrimination. In addition to particle manipulation, the discussion of OAM in chiral light–matter interactions has potential application in, for example, optical enantioseparation or chiral detection.
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spelling pubmed-94189042022-09-20 Optical separation and discrimination of chiral particles by vector beams with orbital angular momentum Li, Manman Yan, Shaohui Zhang, Yanan Chen, Xu Yao, Baoli Nanoscale Adv Chemistry Chirality describes a reduced symmetry and abounds in nature. The handedness-dependent response usually occurs only when a chiral object interacts with another chiral entity. Light carrying orbital angular momentum (OAM) is inherently chiral due to the helical wave front. Here, we put forward a scheme that enables optical separation and simultaneous discrimination of single chiral particles using focused vector beams with OAM. Such focused vector vortex beams carrying radial-splitting optical chirality can selectively trap one enantiomer inside or outside the intensity maxima depending on the sign of the OAM. The particles with different chirality parameters can be trapped on different orbits and experience enhanced orbital motion. Moreover, the magnitude of OAM as well as the size of particle plays an important role in the chiral separation and discrimination. In addition to particle manipulation, the discussion of OAM in chiral light–matter interactions has potential application in, for example, optical enantioseparation or chiral detection. RSC 2021-09-28 /pmc/articles/PMC9418904/ /pubmed/36132368 http://dx.doi.org/10.1039/d1na00530h Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Li, Manman
Yan, Shaohui
Zhang, Yanan
Chen, Xu
Yao, Baoli
Optical separation and discrimination of chiral particles by vector beams with orbital angular momentum
title Optical separation and discrimination of chiral particles by vector beams with orbital angular momentum
title_full Optical separation and discrimination of chiral particles by vector beams with orbital angular momentum
title_fullStr Optical separation and discrimination of chiral particles by vector beams with orbital angular momentum
title_full_unstemmed Optical separation and discrimination of chiral particles by vector beams with orbital angular momentum
title_short Optical separation and discrimination of chiral particles by vector beams with orbital angular momentum
title_sort optical separation and discrimination of chiral particles by vector beams with orbital angular momentum
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9418904/
https://www.ncbi.nlm.nih.gov/pubmed/36132368
http://dx.doi.org/10.1039/d1na00530h
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AT chenxu opticalseparationanddiscriminationofchiralparticlesbyvectorbeamswithorbitalangularmomentum
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