Casimir forces exerted by epsilon-near-zero hyperbolic materials

Abstract The Casimir force exerted on a gold dipolar nanoparticle by a finite-thickness slab of the natural hyperbolic material namely, the ortorhombic crystalline modification of boron nitride, is investigated. The main contribution to the force originates from the TM-polarized waves, for frequenci...

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Autores principales:	Igor S. Nefedov, J. Miguel Rubi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5e1a11dbe10a401a978edd05b5e136d2
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spelling	oai:doaj.org-article:5e1a11dbe10a401a978edd05b5e136d22021-12-02T18:37:07ZCasimir forces exerted by epsilon-near-zero hyperbolic materials10.1038/s41598-020-73995-02045-2322https://doaj.org/article/5e1a11dbe10a401a978edd05b5e136d22020-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-73995-0https://doaj.org/toc/2045-2322Abstract The Casimir force exerted on a gold dipolar nanoparticle by a finite-thickness slab of the natural hyperbolic material namely, the ortorhombic crystalline modification of boron nitride, is investigated. The main contribution to the force originates from the TM-polarized waves, for frequencies at which the parallel and perpendicular components of the dielectric tensor reach minimal values. These frequencies differ from those corresponding to the Lorentzian resonances for the permittivity components. We show that when the slab is made of an isotropic epsilon-near-zero absorbing material the force on the nanoparticle is larger than that induced by a hyperbolic material, for similar values of the characteristic parameters. This fact makes these materials optimal in the use of Casimir’s forces for nanotechnology applications.Igor S. NefedovJ. Miguel RubiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-8 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Igor S. Nefedov J. Miguel Rubi Casimir forces exerted by epsilon-near-zero hyperbolic materials
description	Abstract The Casimir force exerted on a gold dipolar nanoparticle by a finite-thickness slab of the natural hyperbolic material namely, the ortorhombic crystalline modification of boron nitride, is investigated. The main contribution to the force originates from the TM-polarized waves, for frequencies at which the parallel and perpendicular components of the dielectric tensor reach minimal values. These frequencies differ from those corresponding to the Lorentzian resonances for the permittivity components. We show that when the slab is made of an isotropic epsilon-near-zero absorbing material the force on the nanoparticle is larger than that induced by a hyperbolic material, for similar values of the characteristic parameters. This fact makes these materials optimal in the use of Casimir’s forces for nanotechnology applications.
format	article
author	Igor S. Nefedov J. Miguel Rubi
author_facet	Igor S. Nefedov J. Miguel Rubi
author_sort	Igor S. Nefedov
title	Casimir forces exerted by epsilon-near-zero hyperbolic materials
title_short	Casimir forces exerted by epsilon-near-zero hyperbolic materials
title_full	Casimir forces exerted by epsilon-near-zero hyperbolic materials
title_fullStr	Casimir forces exerted by epsilon-near-zero hyperbolic materials
title_full_unstemmed	Casimir forces exerted by epsilon-near-zero hyperbolic materials
title_sort	casimir forces exerted by epsilon-near-zero hyperbolic materials
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/5e1a11dbe10a401a978edd05b5e136d2
work_keys_str_mv	AT igorsnefedov casimirforcesexertedbyepsilonnearzerohyperbolicmaterials AT jmiguelrubi casimirforcesexertedbyepsilonnearzerohyperbolicmaterials
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Casimir forces exerted by epsilon-near-zero hyperbolic materials

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