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标题：VO2-based switchable radiator for spacecraft thermal control
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作者：Heungsoo Kim ; Kwok Cheung ; Raymond C. Y. Auyeung 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2019
卷号：9
期号：1
页码：1-8
DOI：10.1038/s41598-019-47572-z
出版社：Springer Nature
摘要：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.