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Full three-dimensional Poynting vector flow analysis of great field-intensity enhancement in specifically sized spherical-particles
The Poynting vector plays a key role in electrodynamics as it is directly related to the power and the momentum carried by an electromagnetic wave. Based on the Lorenz-Mie theory, we report on the focusing effect of a spherical particle-lens by properly analysing the Poynting vector maps. Convention...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6934590/ https://www.ncbi.nlm.nih.gov/pubmed/31882944 http://dx.doi.org/10.1038/s41598-019-56761-9 |
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author | Yue, Liyang Yan, Bing Monks, James N. Dhama, Rakesh Jiang, Chunlei Minin, Oleg V. Minin, Igor V. Wang, Zengbo |
author_facet | Yue, Liyang Yan, Bing Monks, James N. Dhama, Rakesh Jiang, Chunlei Minin, Oleg V. Minin, Igor V. Wang, Zengbo |
author_sort | Yue, Liyang |
collection | PubMed |
description | The Poynting vector plays a key role in electrodynamics as it is directly related to the power and the momentum carried by an electromagnetic wave. Based on the Lorenz-Mie theory, we report on the focusing effect of a spherical particle-lens by properly analysing the Poynting vector maps. Conventional two-dimensional (2D) maps showing Poynting vector magnitude and direction in a given plane cannot deliver information on three-dimensional (3D) directivity and vectorisation in key regions of singularities, such as vortexes and saddle points, due to poor expressiveness. In this article, an analytical 3D mapping technology is utilised to track the field-features passing through the singularities of the distribution of the Poynting vector in a spherically dielectric mesoscale particle-lens. We discovered that the spheres with the certain size parameters can stimulate extremely large field-intensity at singularities and then form two circular hotspots around the sphere poles. An astonishing large ‘heart-shape’ 3D Poynting vector circulation, which cannot be predicted by conventional 2D mapping analysis, is found to provide a great angular variation within an enormous range in these spheres. We anticipate that this effect will contribute to the field-enhancement phenomena, such as surface enhances Raman scattering, surface enhances absorption, super-resolution imaging and others. |
format | Online Article Text |
id | pubmed-6934590 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-69345902019-12-29 Full three-dimensional Poynting vector flow analysis of great field-intensity enhancement in specifically sized spherical-particles Yue, Liyang Yan, Bing Monks, James N. Dhama, Rakesh Jiang, Chunlei Minin, Oleg V. Minin, Igor V. Wang, Zengbo Sci Rep Article The Poynting vector plays a key role in electrodynamics as it is directly related to the power and the momentum carried by an electromagnetic wave. Based on the Lorenz-Mie theory, we report on the focusing effect of a spherical particle-lens by properly analysing the Poynting vector maps. Conventional two-dimensional (2D) maps showing Poynting vector magnitude and direction in a given plane cannot deliver information on three-dimensional (3D) directivity and vectorisation in key regions of singularities, such as vortexes and saddle points, due to poor expressiveness. In this article, an analytical 3D mapping technology is utilised to track the field-features passing through the singularities of the distribution of the Poynting vector in a spherically dielectric mesoscale particle-lens. We discovered that the spheres with the certain size parameters can stimulate extremely large field-intensity at singularities and then form two circular hotspots around the sphere poles. An astonishing large ‘heart-shape’ 3D Poynting vector circulation, which cannot be predicted by conventional 2D mapping analysis, is found to provide a great angular variation within an enormous range in these spheres. We anticipate that this effect will contribute to the field-enhancement phenomena, such as surface enhances Raman scattering, surface enhances absorption, super-resolution imaging and others. Nature Publishing Group UK 2019-12-27 /pmc/articles/PMC6934590/ /pubmed/31882944 http://dx.doi.org/10.1038/s41598-019-56761-9 Text en © The Author(s) 2019 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 Yue, Liyang Yan, Bing Monks, James N. Dhama, Rakesh Jiang, Chunlei Minin, Oleg V. Minin, Igor V. Wang, Zengbo Full three-dimensional Poynting vector flow analysis of great field-intensity enhancement in specifically sized spherical-particles |
title | Full three-dimensional Poynting vector flow analysis of great field-intensity enhancement in specifically sized spherical-particles |
title_full | Full three-dimensional Poynting vector flow analysis of great field-intensity enhancement in specifically sized spherical-particles |
title_fullStr | Full three-dimensional Poynting vector flow analysis of great field-intensity enhancement in specifically sized spherical-particles |
title_full_unstemmed | Full three-dimensional Poynting vector flow analysis of great field-intensity enhancement in specifically sized spherical-particles |
title_short | Full three-dimensional Poynting vector flow analysis of great field-intensity enhancement in specifically sized spherical-particles |
title_sort | full three-dimensional poynting vector flow analysis of great field-intensity enhancement in specifically sized spherical-particles |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6934590/ https://www.ncbi.nlm.nih.gov/pubmed/31882944 http://dx.doi.org/10.1038/s41598-019-56761-9 |
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