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Structured thermal surface for radiative camouflage

Thermal camouflage has been successful in the conductive regime, where thermal metamaterials embedded in a conductive system can manipulate heat conduction inside the bulk. Most reported approaches are background-dependent and not applicable to radiative heat emitted from the surface of the system....

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Detalles Bibliográficos
Autores principales: Li, Ying, Bai, Xue, Yang, Tianzhi, Luo, Hailu, Qiu, Cheng-Wei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5773602/
https://www.ncbi.nlm.nih.gov/pubmed/29348533
http://dx.doi.org/10.1038/s41467-017-02678-8
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author Li, Ying
Bai, Xue
Yang, Tianzhi
Luo, Hailu
Qiu, Cheng-Wei
author_facet Li, Ying
Bai, Xue
Yang, Tianzhi
Luo, Hailu
Qiu, Cheng-Wei
author_sort Li, Ying
collection PubMed
description Thermal camouflage has been successful in the conductive regime, where thermal metamaterials embedded in a conductive system can manipulate heat conduction inside the bulk. Most reported approaches are background-dependent and not applicable to radiative heat emitted from the surface of the system. A coating with engineered emissivity is one option for radiative camouflage, but only when the background has uniform temperature. Here, we propose a strategy for radiative camouflage of external objects on a given background using a structured thermal surface. The device is non-invasive and restores arbitrary background temperature distributions on its top. For many practical candidates of the background material with similar emissivity as the device, the object can thereby be radiatively concealed without a priori knowledge of the host conductivity and temperature. We expect this strategy to meet the demands of anti-detection and thermal radiation manipulation in complex unknown environments and to inspire developments in phononic and photonic thermotronics.
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spelling pubmed-57736022018-01-23 Structured thermal surface for radiative camouflage Li, Ying Bai, Xue Yang, Tianzhi Luo, Hailu Qiu, Cheng-Wei Nat Commun Article Thermal camouflage has been successful in the conductive regime, where thermal metamaterials embedded in a conductive system can manipulate heat conduction inside the bulk. Most reported approaches are background-dependent and not applicable to radiative heat emitted from the surface of the system. A coating with engineered emissivity is one option for radiative camouflage, but only when the background has uniform temperature. Here, we propose a strategy for radiative camouflage of external objects on a given background using a structured thermal surface. The device is non-invasive and restores arbitrary background temperature distributions on its top. For many practical candidates of the background material with similar emissivity as the device, the object can thereby be radiatively concealed without a priori knowledge of the host conductivity and temperature. We expect this strategy to meet the demands of anti-detection and thermal radiation manipulation in complex unknown environments and to inspire developments in phononic and photonic thermotronics. Nature Publishing Group UK 2018-01-18 /pmc/articles/PMC5773602/ /pubmed/29348533 http://dx.doi.org/10.1038/s41467-017-02678-8 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
Li, Ying
Bai, Xue
Yang, Tianzhi
Luo, Hailu
Qiu, Cheng-Wei
Structured thermal surface for radiative camouflage
title Structured thermal surface for radiative camouflage
title_full Structured thermal surface for radiative camouflage
title_fullStr Structured thermal surface for radiative camouflage
title_full_unstemmed Structured thermal surface for radiative camouflage
title_short Structured thermal surface for radiative camouflage
title_sort structured thermal surface for radiative camouflage
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5773602/
https://www.ncbi.nlm.nih.gov/pubmed/29348533
http://dx.doi.org/10.1038/s41467-017-02678-8
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