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Inhomogeneous field in cavities of zero index metamaterials
In common media, electromagnetic wave always possesses a fluctuant field variation, analogous to an undulant surface of sea. While electromagnetic wave in the media with zero index metamaterials (ZIMs), whose refractive indices are near zero, homogeneous or constant field distribution will emerge, r...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4468819/ https://www.ncbi.nlm.nih.gov/pubmed/26080276 http://dx.doi.org/10.1038/srep11217 |
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author | Fu, Yangyang Xu, Yadong Chen, Huangyang |
author_facet | Fu, Yangyang Xu, Yadong Chen, Huangyang |
author_sort | Fu, Yangyang |
collection | PubMed |
description | In common media, electromagnetic wave always possesses a fluctuant field variation, analogous to an undulant surface of sea. While electromagnetic wave in the media with zero index metamaterials (ZIMs), whose refractive indices are near zero, homogeneous or constant field distribution will emerge, resembling a tranquil surface of lake. Such impression almost could be found in all previous literatures related to ZIMs. However, in this letter, we theoretically and numerically find that, in a cavity structure with ZIMs, when higher order modes (e.g., dipole modes) are excited inside cavity, inhomogeneous field could take place in ZIMs. Such a finding challenges the common perception in ZIMs: It is generally considered that homogeneous or constant field is generated in ZIMs. In addition, the proposed cavity structure herein could be used to manipulate radiation of light, such as enhancing or suppressing radiation, controlling radiation pattern and achieving isotropic or directive radiation, thereby potential applications are expected. These effects are well confirmed by numerical simulations. |
format | Online Article Text |
id | pubmed-4468819 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-44688192015-06-18 Inhomogeneous field in cavities of zero index metamaterials Fu, Yangyang Xu, Yadong Chen, Huangyang Sci Rep Article In common media, electromagnetic wave always possesses a fluctuant field variation, analogous to an undulant surface of sea. While electromagnetic wave in the media with zero index metamaterials (ZIMs), whose refractive indices are near zero, homogeneous or constant field distribution will emerge, resembling a tranquil surface of lake. Such impression almost could be found in all previous literatures related to ZIMs. However, in this letter, we theoretically and numerically find that, in a cavity structure with ZIMs, when higher order modes (e.g., dipole modes) are excited inside cavity, inhomogeneous field could take place in ZIMs. Such a finding challenges the common perception in ZIMs: It is generally considered that homogeneous or constant field is generated in ZIMs. In addition, the proposed cavity structure herein could be used to manipulate radiation of light, such as enhancing or suppressing radiation, controlling radiation pattern and achieving isotropic or directive radiation, thereby potential applications are expected. These effects are well confirmed by numerical simulations. Nature Publishing Group 2015-06-16 /pmc/articles/PMC4468819/ /pubmed/26080276 http://dx.doi.org/10.1038/srep11217 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Fu, Yangyang Xu, Yadong Chen, Huangyang Inhomogeneous field in cavities of zero index metamaterials |
title | Inhomogeneous field in cavities of zero index metamaterials |
title_full | Inhomogeneous field in cavities of zero index metamaterials |
title_fullStr | Inhomogeneous field in cavities of zero index metamaterials |
title_full_unstemmed | Inhomogeneous field in cavities of zero index metamaterials |
title_short | Inhomogeneous field in cavities of zero index metamaterials |
title_sort | inhomogeneous field in cavities of zero index metamaterials |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4468819/ https://www.ncbi.nlm.nih.gov/pubmed/26080276 http://dx.doi.org/10.1038/srep11217 |
work_keys_str_mv | AT fuyangyang inhomogeneousfieldincavitiesofzeroindexmetamaterials AT xuyadong inhomogeneousfieldincavitiesofzeroindexmetamaterials AT chenhuangyang inhomogeneousfieldincavitiesofzeroindexmetamaterials |