Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove

Recent development of particle manipulation has led to high demand for dynamic optical tweezer structures. However, confining and rotating a single microparticle in the far-field region with a uniform potential distribution remains a complicated task. A plasmonic vortex lens (PVL) has been proven to...

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Autores principales: Oktafiani, Fitri, Chen, Jun-Quan, Lee, Po-Tsung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9846437/
https://www.ncbi.nlm.nih.gov/pubmed/36756260
http://dx.doi.org/10.1039/d2na00670g
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author Oktafiani, Fitri
Chen, Jun-Quan
Lee, Po-Tsung
author_facet Oktafiani, Fitri
Chen, Jun-Quan
Lee, Po-Tsung
author_sort Oktafiani, Fitri
collection PubMed
description Recent development of particle manipulation has led to high demand for dynamic optical tweezer structures. However, confining and rotating a single microparticle in the far-field region with a uniform potential distribution remains a complicated task. A plasmonic vortex lens (PVL) has been proven to easily rotate the dielectric particle owing to its effect on orbital angular momentum (OAM). Here we propose and demonstrate PVL multiple arms with a circular groove (CG). The device consists of a multiple arm spiral slit that generates a plasmonic vortex (PV) and a circular groove to bring the PV from the surface to the far-field region. Numerical simulations are performed to calculate the intensity distribution of the primary ring, the optical force and potential. The primary ring size can be adjusted using different polarization directions. PVL 2-arms with a CG has primary ring sizes of 1082 nm under right-handed circular polarization (RCP) and 517 nm under left-handed circular polarization (LCP). Based on these primary ring sizes, a 1 μm polystyrene (PS) bead can be rotated under RCP with a minimum required power of 7.45 mW and trapped under LCP with a minimum required power of 11.84 mW. For PVL 4-arms with a CG under RCP illumination, we optimize the uniform potential distribution by carefully selecting the radius of the groove. Using a groove radius of 1050 nm, we obtain the potential difference between the smallest and largest depth along the x- and y-directions of only 70 k(B)T/W with a minimum required power of 14.86 mW. The method and design discussed here offer an efficient way to manipulate microparticles for micro-rotors, cell dynamic analysis, etc.
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spelling pubmed-98464372023-02-07 Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove Oktafiani, Fitri Chen, Jun-Quan Lee, Po-Tsung Nanoscale Adv Chemistry Recent development of particle manipulation has led to high demand for dynamic optical tweezer structures. However, confining and rotating a single microparticle in the far-field region with a uniform potential distribution remains a complicated task. A plasmonic vortex lens (PVL) has been proven to easily rotate the dielectric particle owing to its effect on orbital angular momentum (OAM). Here we propose and demonstrate PVL multiple arms with a circular groove (CG). The device consists of a multiple arm spiral slit that generates a plasmonic vortex (PV) and a circular groove to bring the PV from the surface to the far-field region. Numerical simulations are performed to calculate the intensity distribution of the primary ring, the optical force and potential. The primary ring size can be adjusted using different polarization directions. PVL 2-arms with a CG has primary ring sizes of 1082 nm under right-handed circular polarization (RCP) and 517 nm under left-handed circular polarization (LCP). Based on these primary ring sizes, a 1 μm polystyrene (PS) bead can be rotated under RCP with a minimum required power of 7.45 mW and trapped under LCP with a minimum required power of 11.84 mW. For PVL 4-arms with a CG under RCP illumination, we optimize the uniform potential distribution by carefully selecting the radius of the groove. Using a groove radius of 1050 nm, we obtain the potential difference between the smallest and largest depth along the x- and y-directions of only 70 k(B)T/W with a minimum required power of 14.86 mW. The method and design discussed here offer an efficient way to manipulate microparticles for micro-rotors, cell dynamic analysis, etc. RSC 2022-11-21 /pmc/articles/PMC9846437/ /pubmed/36756260 http://dx.doi.org/10.1039/d2na00670g Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Oktafiani, Fitri
Chen, Jun-Quan
Lee, Po-Tsung
Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove
title Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove
title_full Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove
title_fullStr Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove
title_full_unstemmed Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove
title_short Dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove
title_sort dynamic single microparticle manipulation in the far-field region using plasmonic vortex lens multiple arms with a circular groove
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9846437/
https://www.ncbi.nlm.nih.gov/pubmed/36756260
http://dx.doi.org/10.1039/d2na00670g
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