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Temperature-mediated invocation of the vacuum state for switchable ultrawide-angle and broadband deflection

Temperature-mediated appearance and disappearance of a deflection grating in a diffracting structure is possible by employing InSb as the grating material. InSb transits from the dielectric state to the plasmonic state in the terahertz regime as the temperature increases, this transition being rever...

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Autores principales: Serebryannikov, Andriy E., Lakhtakia, Akhlesh, Aalizadeh, Majid, Ozbay, Ekmel, Vandenbosch, Guy A. E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6177457/
https://www.ncbi.nlm.nih.gov/pubmed/30301912
http://dx.doi.org/10.1038/s41598-018-32977-z
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author Serebryannikov, Andriy E.
Lakhtakia, Akhlesh
Aalizadeh, Majid
Ozbay, Ekmel
Vandenbosch, Guy A. E.
author_facet Serebryannikov, Andriy E.
Lakhtakia, Akhlesh
Aalizadeh, Majid
Ozbay, Ekmel
Vandenbosch, Guy A. E.
author_sort Serebryannikov, Andriy E.
collection PubMed
description Temperature-mediated appearance and disappearance of a deflection grating in a diffracting structure is possible by employing InSb as the grating material. InSb transits from the dielectric state to the plasmonic state in the terahertz regime as the temperature increases, this transition being reversible. An intermediate state is the vacuum state in which the real part of the relative permittivity of InSb equals unity while the imaginary part is much smaller. Then the grating virtually disappears, deflection being impossible as only specular reflection can occur. This ON/OFF switching of deflection and relevant angular filtering are realizable over wide ranges of frequency and incidence angle by a temperature change of as low as 20 K. The vacuum state of InSb invoked for ON/OFF switching of deflection and relevant angular filtering can also be obtained for thermally tunable materials other than InSb as well as by using non-thermal mechanisms.
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spelling pubmed-61774572018-10-12 Temperature-mediated invocation of the vacuum state for switchable ultrawide-angle and broadband deflection Serebryannikov, Andriy E. Lakhtakia, Akhlesh Aalizadeh, Majid Ozbay, Ekmel Vandenbosch, Guy A. E. Sci Rep Article Temperature-mediated appearance and disappearance of a deflection grating in a diffracting structure is possible by employing InSb as the grating material. InSb transits from the dielectric state to the plasmonic state in the terahertz regime as the temperature increases, this transition being reversible. An intermediate state is the vacuum state in which the real part of the relative permittivity of InSb equals unity while the imaginary part is much smaller. Then the grating virtually disappears, deflection being impossible as only specular reflection can occur. This ON/OFF switching of deflection and relevant angular filtering are realizable over wide ranges of frequency and incidence angle by a temperature change of as low as 20 K. The vacuum state of InSb invoked for ON/OFF switching of deflection and relevant angular filtering can also be obtained for thermally tunable materials other than InSb as well as by using non-thermal mechanisms. Nature Publishing Group UK 2018-10-09 /pmc/articles/PMC6177457/ /pubmed/30301912 http://dx.doi.org/10.1038/s41598-018-32977-z Text en © The Author(s) 2018 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Serebryannikov, Andriy E.
Lakhtakia, Akhlesh
Aalizadeh, Majid
Ozbay, Ekmel
Vandenbosch, Guy A. E.
Temperature-mediated invocation of the vacuum state for switchable ultrawide-angle and broadband deflection
title Temperature-mediated invocation of the vacuum state for switchable ultrawide-angle and broadband deflection
title_full Temperature-mediated invocation of the vacuum state for switchable ultrawide-angle and broadband deflection
title_fullStr Temperature-mediated invocation of the vacuum state for switchable ultrawide-angle and broadband deflection
title_full_unstemmed Temperature-mediated invocation of the vacuum state for switchable ultrawide-angle and broadband deflection
title_short Temperature-mediated invocation of the vacuum state for switchable ultrawide-angle and broadband deflection
title_sort temperature-mediated invocation of the vacuum state for switchable ultrawide-angle and broadband deflection
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6177457/
https://www.ncbi.nlm.nih.gov/pubmed/30301912
http://dx.doi.org/10.1038/s41598-018-32977-z
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