Smart optical cross dipole nanoantenna with multibeam pattern

Abstract 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 directivi...

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Autores principales:	Seyyed Mohammad Mehdi Moshiri, Najmeh Nozhat
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/48b5beb3011b4393939305eea667770f
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spelling	oai:doaj.org-article:48b5beb3011b4393939305eea667770f2021-12-02T13:19:31ZSmart optical cross dipole nanoantenna with multibeam pattern10.1038/s41598-021-84495-02045-2322https://doaj.org/article/48b5beb3011b4393939305eea667770f2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-84495-0https://doaj.org/toc/2045-2322Abstract 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.Seyyed Mohammad Mehdi MoshiriNajmeh NozhatNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Seyyed Mohammad Mehdi Moshiri Najmeh Nozhat Smart optical cross dipole nanoantenna with multibeam pattern
description	Abstract 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.
format	article
author	Seyyed Mohammad Mehdi Moshiri Najmeh Nozhat
author_facet	Seyyed Mohammad Mehdi Moshiri Najmeh Nozhat
author_sort	Seyyed Mohammad Mehdi Moshiri
title	Smart optical cross dipole nanoantenna with multibeam pattern
title_short	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_sort	smart optical cross dipole nanoantenna with multibeam pattern
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/48b5beb3011b4393939305eea667770f
work_keys_str_mv	AT seyyedmohammadmehdimoshiri smartopticalcrossdipolenanoantennawithmultibeampattern AT najmehnozhat smartopticalcrossdipolenanoantennawithmultibeampattern
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Smart optical cross dipole nanoantenna with multibeam pattern

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