VO(2)-based switchable radiator for spacecraft thermal control

Direct calorimetric measurements of a solid state passive switchable radiator for spacecraft thermal control have been performed in a simulated space environment. Dynamic emissivity control is provided by the thermochromic phase change in a multilayer VO(2) thin film based resonant absorber. The mea...

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Detalles Bibliográficos
Autores principales: Kim, Heungsoo, Cheung, Kwok, Auyeung, Raymond C. Y., Wilson, Donald E., Charipar, Kristin M., Piqué, Alberto, Charipar, Nicholas A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6683125/
https://www.ncbi.nlm.nih.gov/pubmed/31383877
http://dx.doi.org/10.1038/s41598-019-47572-z
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author Kim, Heungsoo
Cheung, Kwok
Auyeung, Raymond C. Y.
Wilson, Donald E.
Charipar, Kristin M.
Piqué, Alberto
Charipar, Nicholas A.
author_facet Kim, Heungsoo
Cheung, Kwok
Auyeung, Raymond C. Y.
Wilson, Donald E.
Charipar, Kristin M.
Piqué, Alberto
Charipar, Nicholas A.
author_sort Kim, Heungsoo
collection PubMed
description Direct calorimetric measurements of a solid state passive switchable radiator for spacecraft thermal control have been performed in a simulated space environment. Dynamic emissivity control is provided by the thermochromic phase change in a multilayer VO(2) thin film based resonant absorber. The measured radiated power difference between 300 K and 373 K was 480 W/m(2) corresponding to a 7× difference in radiative cooling power. We present theoretical and experimental radiator values for both normal and hemispherical as well the optical properties of VO(2) as determined via infrared spectroscopic ellipsometry.
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spelling pubmed-66831252019-08-09 VO(2)-based switchable radiator for spacecraft thermal control Kim, Heungsoo Cheung, Kwok Auyeung, Raymond C. Y. Wilson, Donald E. Charipar, Kristin M. Piqué, Alberto Charipar, Nicholas A. Sci Rep Article Direct calorimetric measurements of a solid state passive switchable radiator for spacecraft thermal control have been performed in a simulated space environment. Dynamic emissivity control is provided by the thermochromic phase change in a multilayer VO(2) thin film based resonant absorber. The measured radiated power difference between 300 K and 373 K was 480 W/m(2) corresponding to a 7× difference in radiative cooling power. We present theoretical and experimental radiator values for both normal and hemispherical as well the optical properties of VO(2) as determined via infrared spectroscopic ellipsometry. Nature Publishing Group UK 2019-08-05 /pmc/articles/PMC6683125/ /pubmed/31383877 http://dx.doi.org/10.1038/s41598-019-47572-z Text en © The Author(s) 2019 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
Kim, Heungsoo
Cheung, Kwok
Auyeung, Raymond C. Y.
Wilson, Donald E.
Charipar, Kristin M.
Piqué, Alberto
Charipar, Nicholas A.
VO(2)-based switchable radiator for spacecraft thermal control
title VO(2)-based switchable radiator for spacecraft thermal control
title_full VO(2)-based switchable radiator for spacecraft thermal control
title_fullStr VO(2)-based switchable radiator for spacecraft thermal control
title_full_unstemmed VO(2)-based switchable radiator for spacecraft thermal control
title_short VO(2)-based switchable radiator for spacecraft thermal control
title_sort vo(2)-based switchable radiator for spacecraft thermal control
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6683125/
https://www.ncbi.nlm.nih.gov/pubmed/31383877
http://dx.doi.org/10.1038/s41598-019-47572-z
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