Plasmonic Spherical Heterodimers: Reversal of Optical Binding Force Based on the Forced Breaking of Symmetry

Abstract The stimulating connection between the reversal of near-field plasmonic binding force and the role of symmetry-breaking has not been investigated comprehensively in the literature. In this work, the symmetry of spherical plasmonic heterodimer-setup is broken forcefully by shining the light...

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Autores principales:	M. R. C. Mahdy, Md. Danesh, Tianhang Zhang, Weiqiang Ding, Hamim Mahmud Rivy, Ariful Bari Chowdhury, M. Q. Mehmood
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a0ab0264d5014cf59345f82cef6663af
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spelling	oai:doaj.org-article:a0ab0264d5014cf59345f82cef6663af2021-12-02T15:07:52ZPlasmonic Spherical Heterodimers: Reversal of Optical Binding Force Based on the Forced Breaking of Symmetry10.1038/s41598-018-21498-42045-2322https://doaj.org/article/a0ab0264d5014cf59345f82cef6663af2018-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-21498-4https://doaj.org/toc/2045-2322Abstract The stimulating connection between the reversal of near-field plasmonic binding force and the role of symmetry-breaking has not been investigated comprehensively in the literature. In this work, the symmetry of spherical plasmonic heterodimer-setup is broken forcefully by shining the light from a specific side of the set-up instead of impinging it from the top. We demonstrate that for the forced symmetry-broken spherical heterodimer-configurations: reversal of lateral and longitudinal near-field binding force follow completely distinct mechanisms. Interestingly, the reversal of longitudinal binding force can be easily controlled either by changing the direction of light propagation or by varying their relative orientation. This simple process of controlling binding force may open a novel generic way of optical manipulation even with the heterodimers of other shapes. Though it is commonly believed that the reversal of near-field plasmonic binding force should naturally occur for the presence of bonding and anti-bonding modes or at least for the Fano resonance (and plasmonic forces mostly arise from the surface force), our study based on Lorentz-force dynamics suggests notably opposite proposals for the aforementioned cases. Observations in this article can be very useful for improved sensors, particle clustering and aggregation.M. R. C. MahdyMd. DaneshTianhang ZhangWeiqiang DingHamim Mahmud RivyAriful Bari ChowdhuryM. Q. MehmoodNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-12 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q M. R. C. Mahdy Md. Danesh Tianhang Zhang Weiqiang Ding Hamim Mahmud Rivy Ariful Bari Chowdhury M. Q. Mehmood Plasmonic Spherical Heterodimers: Reversal of Optical Binding Force Based on the Forced Breaking of Symmetry
description	Abstract The stimulating connection between the reversal of near-field plasmonic binding force and the role of symmetry-breaking has not been investigated comprehensively in the literature. In this work, the symmetry of spherical plasmonic heterodimer-setup is broken forcefully by shining the light from a specific side of the set-up instead of impinging it from the top. We demonstrate that for the forced symmetry-broken spherical heterodimer-configurations: reversal of lateral and longitudinal near-field binding force follow completely distinct mechanisms. Interestingly, the reversal of longitudinal binding force can be easily controlled either by changing the direction of light propagation or by varying their relative orientation. This simple process of controlling binding force may open a novel generic way of optical manipulation even with the heterodimers of other shapes. Though it is commonly believed that the reversal of near-field plasmonic binding force should naturally occur for the presence of bonding and anti-bonding modes or at least for the Fano resonance (and plasmonic forces mostly arise from the surface force), our study based on Lorentz-force dynamics suggests notably opposite proposals for the aforementioned cases. Observations in this article can be very useful for improved sensors, particle clustering and aggregation.
format	article
author	M. R. C. Mahdy Md. Danesh Tianhang Zhang Weiqiang Ding Hamim Mahmud Rivy Ariful Bari Chowdhury M. Q. Mehmood
author_facet	M. R. C. Mahdy Md. Danesh Tianhang Zhang Weiqiang Ding Hamim Mahmud Rivy Ariful Bari Chowdhury M. Q. Mehmood
author_sort	M. R. C. Mahdy
title	Plasmonic Spherical Heterodimers: Reversal of Optical Binding Force Based on the Forced Breaking of Symmetry
title_short	Plasmonic Spherical Heterodimers: Reversal of Optical Binding Force Based on the Forced Breaking of Symmetry
title_full	Plasmonic Spherical Heterodimers: Reversal of Optical Binding Force Based on the Forced Breaking of Symmetry
title_fullStr	Plasmonic Spherical Heterodimers: Reversal of Optical Binding Force Based on the Forced Breaking of Symmetry
title_full_unstemmed	Plasmonic Spherical Heterodimers: Reversal of Optical Binding Force Based on the Forced Breaking of Symmetry
title_sort	plasmonic spherical heterodimers: reversal of optical binding force based on the forced breaking of symmetry
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/a0ab0264d5014cf59345f82cef6663af
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Plasmonic Spherical Heterodimers: Reversal of Optical Binding Force Based on the Forced Breaking of Symmetry

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