Optimized anti-reflection core-shell microspheres for enhanced optical trapping by structured light beams

Abstract In this paper, we study the optical trapping of anti-reflection core-shell microspheres by regular Gaussian beam and several structured beams including radially polarized Gaussian, petal, and hard-aperture-truncated circular Airy beams. We show that using an appropriate anti-reflection core...

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Autores principales:	Vahid Shahabadi, Ebrahim Madadi, Daryoush Abdollahpour
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f4c276ff11a64c5a8267ddd12733ddbe
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spelling	oai:doaj.org-article:f4c276ff11a64c5a8267ddd12733ddbe2021-12-02T11:35:58ZOptimized anti-reflection core-shell microspheres for enhanced optical trapping by structured light beams10.1038/s41598-021-84665-02045-2322https://doaj.org/article/f4c276ff11a64c5a8267ddd12733ddbe2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84665-0https://doaj.org/toc/2045-2322Abstract In this paper, we study the optical trapping of anti-reflection core-shell microspheres by regular Gaussian beam and several structured beams including radially polarized Gaussian, petal, and hard-aperture-truncated circular Airy beams. We show that using an appropriate anti-reflection core-shell microsphere for the optical trapping by several structured light beams can dramatically enhance the strength of the trap compared to the trapping by the common Gaussian beam. The optimal core-shell thickness ratio that minimizes the scattering force is obtained for polystyrene-silica and anatase-amorphous titania microspheres, such that the core-shells act as anti-reflection coated microspheres. We show that the trapping strength of the anti-reflection coated microparticles trapped by the common Gaussian beam is enhanced up to 2-fold compared to that of trapped uncoated microparticles, while the trapping of anti-reflection coated microparticles, by the radially polarized beam, is strengthened up to 4-fold in comparison to that of the trapped uncoated microparticles by the Gaussian beam. Our results indicate that for anatase-amorphous titania microparticles highest trap strength is obtained by radially polarized beam, while for the polystyrene-silica microparticles, the strongest trapping is achieved by the petal beam.Vahid ShahabadiEbrahim MadadiDaryoush AbdollahpourNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Vahid Shahabadi Ebrahim Madadi Daryoush Abdollahpour Optimized anti-reflection core-shell microspheres for enhanced optical trapping by structured light beams
description	Abstract In this paper, we study the optical trapping of anti-reflection core-shell microspheres by regular Gaussian beam and several structured beams including radially polarized Gaussian, petal, and hard-aperture-truncated circular Airy beams. We show that using an appropriate anti-reflection core-shell microsphere for the optical trapping by several structured light beams can dramatically enhance the strength of the trap compared to the trapping by the common Gaussian beam. The optimal core-shell thickness ratio that minimizes the scattering force is obtained for polystyrene-silica and anatase-amorphous titania microspheres, such that the core-shells act as anti-reflection coated microspheres. We show that the trapping strength of the anti-reflection coated microparticles trapped by the common Gaussian beam is enhanced up to 2-fold compared to that of trapped uncoated microparticles, while the trapping of anti-reflection coated microparticles, by the radially polarized beam, is strengthened up to 4-fold in comparison to that of the trapped uncoated microparticles by the Gaussian beam. Our results indicate that for anatase-amorphous titania microparticles highest trap strength is obtained by radially polarized beam, while for the polystyrene-silica microparticles, the strongest trapping is achieved by the petal beam.
format	article
author	Vahid Shahabadi Ebrahim Madadi Daryoush Abdollahpour
author_facet	Vahid Shahabadi Ebrahim Madadi Daryoush Abdollahpour
author_sort	Vahid Shahabadi
title	Optimized anti-reflection core-shell microspheres for enhanced optical trapping by structured light beams
title_short	Optimized anti-reflection core-shell microspheres for enhanced optical trapping by structured light beams
title_full	Optimized anti-reflection core-shell microspheres for enhanced optical trapping by structured light beams
title_fullStr	Optimized anti-reflection core-shell microspheres for enhanced optical trapping by structured light beams
title_full_unstemmed	Optimized anti-reflection core-shell microspheres for enhanced optical trapping by structured light beams
title_sort	optimized anti-reflection core-shell microspheres for enhanced optical trapping by structured light beams
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f4c276ff11a64c5a8267ddd12733ddbe
work_keys_str_mv	AT vahidshahabadi optimizedantireflectioncoreshellmicrospheresforenhancedopticaltrappingbystructuredlightbeams AT ebrahimmadadi optimizedantireflectioncoreshellmicrospheresforenhancedopticaltrappingbystructuredlightbeams AT daryoushabdollahpour optimizedantireflectioncoreshellmicrospheresforenhancedopticaltrappingbystructuredlightbeams
_version_	1718395856448651264

Optimized anti-reflection core-shell microspheres for enhanced optical trapping by structured light beams

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