Design and modeling of a planar graphene structure as a terahertz cyclotron radiation source

Abstract With incredibly high carrier mobility and saturation velocity, graphene would be an ideal candidate for a miniaturized solid-state cyclotron radiation source. A planar semicircular graphene arc geometry was investigated for emission in the 0.5–1.5 THz range. Analytical studies, confirmed by...

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Autores principales:	Jordan Planillo, Fabio Alves
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f84a7ccf5e4f40a683d8c5c7ab491dd4
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spelling	oai:doaj.org-article:f84a7ccf5e4f40a683d8c5c7ab491dd42021-12-02T16:35:37ZDesign and modeling of a planar graphene structure as a terahertz cyclotron radiation source10.1038/s41598-021-95502-92045-2322https://doaj.org/article/f84a7ccf5e4f40a683d8c5c7ab491dd42021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95502-9https://doaj.org/toc/2045-2322Abstract With incredibly high carrier mobility and saturation velocity, graphene would be an ideal candidate for a miniaturized solid-state cyclotron radiation source. A planar semicircular graphene arc geometry was investigated for emission in the 0.5–1.5 THz range. Analytical studies, confirmed by finite element simulations, show that the emitted THz frequencies are inversely proportional to the arc radius given a fixed charge-carrier velocity. The simulations show that the desired frequency spectrum can be obtained with design radii ranging from 50 to 150 nm. Interestingly, the radiated spectrum is independent of the frequency of the stimulation of the graphene nano-arcs. The simulations also indicate that the total output power correlates well with the Larmor formulation. The device is expected to emit 1 nW/cm2, which confirms the findings of existing research in this field. Such a design could yield a scalable and cost-effective THz source.Jordan PlanilloFabio AlvesNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jordan Planillo Fabio Alves Design and modeling of a planar graphene structure as a terahertz cyclotron radiation source
description	Abstract With incredibly high carrier mobility and saturation velocity, graphene would be an ideal candidate for a miniaturized solid-state cyclotron radiation source. A planar semicircular graphene arc geometry was investigated for emission in the 0.5–1.5 THz range. Analytical studies, confirmed by finite element simulations, show that the emitted THz frequencies are inversely proportional to the arc radius given a fixed charge-carrier velocity. The simulations show that the desired frequency spectrum can be obtained with design radii ranging from 50 to 150 nm. Interestingly, the radiated spectrum is independent of the frequency of the stimulation of the graphene nano-arcs. The simulations also indicate that the total output power correlates well with the Larmor formulation. The device is expected to emit 1 nW/cm2, which confirms the findings of existing research in this field. Such a design could yield a scalable and cost-effective THz source.
format	article
author	Jordan Planillo Fabio Alves
author_facet	Jordan Planillo Fabio Alves
author_sort	Jordan Planillo
title	Design and modeling of a planar graphene structure as a terahertz cyclotron radiation source
title_short	Design and modeling of a planar graphene structure as a terahertz cyclotron radiation source
title_full	Design and modeling of a planar graphene structure as a terahertz cyclotron radiation source
title_fullStr	Design and modeling of a planar graphene structure as a terahertz cyclotron radiation source
title_full_unstemmed	Design and modeling of a planar graphene structure as a terahertz cyclotron radiation source
title_sort	design and modeling of a planar graphene structure as a terahertz cyclotron radiation source
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f84a7ccf5e4f40a683d8c5c7ab491dd4
work_keys_str_mv	AT jordanplanillo designandmodelingofaplanargraphenestructureasaterahertzcyclotronradiationsource AT fabioalves designandmodelingofaplanargraphenestructureasaterahertzcyclotronradiationsource
_version_	1718383730138021888

Design and modeling of a planar graphene structure as a terahertz cyclotron radiation source

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