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3D Optical Vortex Trapping of Plasmonic Nanostructure
3D optical vortex trapping upon a polystyrene nanoparticle (NP) by a 1D gold dimer array is studied theoretically. The optical force field shows that the trapping mode can be contact or non-contact. For the former, the NP is attracted toward a corresponding dimer. For the latter, it is trapped towar...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6107535/ https://www.ncbi.nlm.nih.gov/pubmed/30140032 http://dx.doi.org/10.1038/s41598-018-30948-y |
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author | Liaw, Jiunn-Woei Chien, Chiao-Wei Liu, Kun-Chi Ku, Yun-Cheng Kuo, Mao-Kuen |
author_facet | Liaw, Jiunn-Woei Chien, Chiao-Wei Liu, Kun-Chi Ku, Yun-Cheng Kuo, Mao-Kuen |
author_sort | Liaw, Jiunn-Woei |
collection | PubMed |
description | 3D optical vortex trapping upon a polystyrene nanoparticle (NP) by a 1D gold dimer array is studied theoretically. The optical force field shows that the trapping mode can be contact or non-contact. For the former, the NP is attracted toward a corresponding dimer. For the latter, it is trapped toward a stagnation point of zero force with a 3D spiral trajectory, revealing optical vortex. Additionally the optical torque causes the NP to transversely spin, even though the system is irradiated by a linearly polarized light. The transverse spin-orbit interaction is manifested from the opposite helicities of the spin and spiral orbit. Along with the growth and decline of optical vortices the trapped NP performs a step-like motion, as the array continuously moves. Our results, in agreement with the previous experiment, identify the role of optical vortex in the near-field trapping of plasmonic nanostructure. |
format | Online Article Text |
id | pubmed-6107535 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-61075352018-08-28 3D Optical Vortex Trapping of Plasmonic Nanostructure Liaw, Jiunn-Woei Chien, Chiao-Wei Liu, Kun-Chi Ku, Yun-Cheng Kuo, Mao-Kuen Sci Rep Article 3D optical vortex trapping upon a polystyrene nanoparticle (NP) by a 1D gold dimer array is studied theoretically. The optical force field shows that the trapping mode can be contact or non-contact. For the former, the NP is attracted toward a corresponding dimer. For the latter, it is trapped toward a stagnation point of zero force with a 3D spiral trajectory, revealing optical vortex. Additionally the optical torque causes the NP to transversely spin, even though the system is irradiated by a linearly polarized light. The transverse spin-orbit interaction is manifested from the opposite helicities of the spin and spiral orbit. Along with the growth and decline of optical vortices the trapped NP performs a step-like motion, as the array continuously moves. Our results, in agreement with the previous experiment, identify the role of optical vortex in the near-field trapping of plasmonic nanostructure. Nature Publishing Group UK 2018-08-23 /pmc/articles/PMC6107535/ /pubmed/30140032 http://dx.doi.org/10.1038/s41598-018-30948-y Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Liaw, Jiunn-Woei Chien, Chiao-Wei Liu, Kun-Chi Ku, Yun-Cheng Kuo, Mao-Kuen 3D Optical Vortex Trapping of Plasmonic Nanostructure |
title | 3D Optical Vortex Trapping of Plasmonic Nanostructure |
title_full | 3D Optical Vortex Trapping of Plasmonic Nanostructure |
title_fullStr | 3D Optical Vortex Trapping of Plasmonic Nanostructure |
title_full_unstemmed | 3D Optical Vortex Trapping of Plasmonic Nanostructure |
title_short | 3D Optical Vortex Trapping of Plasmonic Nanostructure |
title_sort | 3d optical vortex trapping of plasmonic nanostructure |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6107535/ https://www.ncbi.nlm.nih.gov/pubmed/30140032 http://dx.doi.org/10.1038/s41598-018-30948-y |
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