Topological insulator metamaterials with tunable negative refractive index in the optical region

A blueshift tunable metamaterial (MM) exhibiting a double-negative refractive index based on a topological insulator (bismuth selenide, Bi(2)Se(3)) has been demonstrated in the near-infrared (NIR) spectral region. The potential of Bi(2)Se(3) as a dielectric interlayer of the multilayer MM is explore...

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Detalles Bibliográficos
Autores principales: Cao, Tun, Wang, Shuai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer 2013
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3866564/
https://www.ncbi.nlm.nih.gov/pubmed/24330596
http://dx.doi.org/10.1186/1556-276X-8-526
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author Cao, Tun
Wang, Shuai
author_facet Cao, Tun
Wang, Shuai
author_sort Cao, Tun
collection PubMed
description A blueshift tunable metamaterial (MM) exhibiting a double-negative refractive index based on a topological insulator (bismuth selenide, Bi(2)Se(3)) has been demonstrated in the near-infrared (NIR) spectral region. The potential of Bi(2)Se(3) as a dielectric interlayer of the multilayer MM is explored. The optical response of elliptical nanohole arrays penetrating through Au/Bi(2)Se(3)/Au films is numerically investigated using the finite difference time domain (FDTD) method. The blueshift tuning range of the MM is as high as 370 nm (from 2,140 to 1,770 nm) after switching the Bi(2)Se(3) between its trigonal and orthorhombic states.
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spelling pubmed-38665642013-12-19 Topological insulator metamaterials with tunable negative refractive index in the optical region Cao, Tun Wang, Shuai Nanoscale Res Lett Nano Express A blueshift tunable metamaterial (MM) exhibiting a double-negative refractive index based on a topological insulator (bismuth selenide, Bi(2)Se(3)) has been demonstrated in the near-infrared (NIR) spectral region. The potential of Bi(2)Se(3) as a dielectric interlayer of the multilayer MM is explored. The optical response of elliptical nanohole arrays penetrating through Au/Bi(2)Se(3)/Au films is numerically investigated using the finite difference time domain (FDTD) method. The blueshift tuning range of the MM is as high as 370 nm (from 2,140 to 1,770 nm) after switching the Bi(2)Se(3) between its trigonal and orthorhombic states. Springer 2013-12-13 /pmc/articles/PMC3866564/ /pubmed/24330596 http://dx.doi.org/10.1186/1556-276X-8-526 Text en Copyright © 2013 Cao and Wang; licensee Springer. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Nano Express
Cao, Tun
Wang, Shuai
Topological insulator metamaterials with tunable negative refractive index in the optical region
title Topological insulator metamaterials with tunable negative refractive index in the optical region
title_full Topological insulator metamaterials with tunable negative refractive index in the optical region
title_fullStr Topological insulator metamaterials with tunable negative refractive index in the optical region
title_full_unstemmed Topological insulator metamaterials with tunable negative refractive index in the optical region
title_short Topological insulator metamaterials with tunable negative refractive index in the optical region
title_sort topological insulator metamaterials with tunable negative refractive index in the optical region
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3866564/
https://www.ncbi.nlm.nih.gov/pubmed/24330596
http://dx.doi.org/10.1186/1556-276X-8-526
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