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Smart optical cross dipole nanoantenna with multibeam pattern

In this paper, an optical smart multibeam cross dipole nano-antenna has been proposed by combining the absorption characteristic of graphene and applying different arrangements of directors. By introducing a cross dipole nano-antenna with two V-shaped coupled elements, the maximum directivity of 8.7...

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Autores principales: Moshiri, Seyyed Mohammad Mehdi, Nozhat, Najmeh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7930033/
https://www.ncbi.nlm.nih.gov/pubmed/33658603
http://dx.doi.org/10.1038/s41598-021-84495-0
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author Moshiri, Seyyed Mohammad Mehdi
Nozhat, Najmeh
author_facet Moshiri, Seyyed Mohammad Mehdi
Nozhat, Najmeh
author_sort Moshiri, Seyyed Mohammad Mehdi
collection PubMed
description In this paper, an optical smart multibeam cross dipole nano-antenna has been proposed by combining the absorption characteristic of graphene and applying different arrangements of directors. By introducing a cross dipole nano-antenna with two V-shaped coupled elements, the maximum directivity of 8.79 dBi has been obtained for unidirectional radiation pattern. Also, by applying various arrangements of circular sectors as director, different types of radiation pattern such as bi- and quad-directional have been attained with directivities of 8.63 and 8.42 dBi, respectively, at the wavelength of 1550 nm. The maximum absorption power of graphene can be tuned by choosing an appropriate chemical potential. Therefore, the radiation beam of the proposed multibeam cross dipole nano-antenna has been controlled dynamically by applying a monolayer graphene. By choosing a suitable chemical potential of graphene for each arm of the suggested cross dipole nano-antenna without the director, the unidirectional radiation pattern shifts ± 13° at the wavelength of 1550 nm. Also, for the multibeam nano-antenna with different arrangements of directors, the bi- and quad-directional radiation patterns have been smartly modified to uni- and bi-directional ones with the directivities of 10.1 and 9.54 dBi, respectively. It is because of the graphene performance as an absorptive or transparent element for different chemical potentials. This feature helps us to create a multipath wireless link with the capability to control the accessibility of each receiver.
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spelling pubmed-79300332021-03-04 Smart optical cross dipole nanoantenna with multibeam pattern Moshiri, Seyyed Mohammad Mehdi Nozhat, Najmeh Sci Rep Article In this paper, an optical smart multibeam cross dipole nano-antenna has been proposed by combining the absorption characteristic of graphene and applying different arrangements of directors. By introducing a cross dipole nano-antenna with two V-shaped coupled elements, the maximum directivity of 8.79 dBi has been obtained for unidirectional radiation pattern. Also, by applying various arrangements of circular sectors as director, different types of radiation pattern such as bi- and quad-directional have been attained with directivities of 8.63 and 8.42 dBi, respectively, at the wavelength of 1550 nm. The maximum absorption power of graphene can be tuned by choosing an appropriate chemical potential. Therefore, the radiation beam of the proposed multibeam cross dipole nano-antenna has been controlled dynamically by applying a monolayer graphene. By choosing a suitable chemical potential of graphene for each arm of the suggested cross dipole nano-antenna without the director, the unidirectional radiation pattern shifts ± 13° at the wavelength of 1550 nm. Also, for the multibeam nano-antenna with different arrangements of directors, the bi- and quad-directional radiation patterns have been smartly modified to uni- and bi-directional ones with the directivities of 10.1 and 9.54 dBi, respectively. It is because of the graphene performance as an absorptive or transparent element for different chemical potentials. This feature helps us to create a multipath wireless link with the capability to control the accessibility of each receiver. Nature Publishing Group UK 2021-03-03 /pmc/articles/PMC7930033/ /pubmed/33658603 http://dx.doi.org/10.1038/s41598-021-84495-0 Text en © The Author(s) 2021 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Moshiri, Seyyed Mohammad Mehdi
Nozhat, Najmeh
Smart optical cross dipole nanoantenna with multibeam pattern
title Smart optical cross dipole nanoantenna with multibeam pattern
title_full Smart optical cross dipole nanoantenna with multibeam pattern
title_fullStr Smart optical cross dipole nanoantenna with multibeam pattern
title_full_unstemmed Smart optical cross dipole nanoantenna with multibeam pattern
title_short Smart optical cross dipole nanoantenna with multibeam pattern
title_sort smart optical cross dipole nanoantenna with multibeam pattern
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7930033/
https://www.ncbi.nlm.nih.gov/pubmed/33658603
http://dx.doi.org/10.1038/s41598-021-84495-0
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