Experimental demonstration of dynamic thermal regulation using vanadium dioxide thin films
We present an experimental demonstration of passive, dynamic thermal regulation in a solid-state system with temperature-dependent thermal emissivity switching. We achieve this effect using a multilayered device, comprised of a vanadium dioxide (VO 2 ) thin film on a silicon substrate with a gold ba...
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| Veröffentlicht in: | Scientific reports 2020-08, Vol.10 (1), p.13964-13964, Article 13964 |
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| creator | Morsy, Ahmed M. Barako, Michael T. Jankovic, Vladan Wheeler, Virginia D. Knight, Mark W. Papadakis, Georgia T. Sweatlock, Luke A. Hon, Philip W. C. Povinelli, Michelle L. |
| description | We present an experimental demonstration of passive, dynamic thermal regulation in a solid-state system with temperature-dependent thermal emissivity switching. We achieve this effect using a multilayered device, comprised of a vanadium dioxide (VO
2
) thin film on a silicon substrate with a gold back reflector. We experimentally characterize the optical properties of the VO
2
film and use the results to optimize device design. Using a calibrated, transient calorimetry experiment we directly measure the temperature fluctuations arising from a time-varying heat load. Under laboratory conditions, we find that the device regulates temperature better than a constant emissivity sample. We use the experimental results to validate our thermal model, which can be used to predict device performance under the conditions of outer space. In this limit, thermal fluctuations are halved with reference to a constant-emissivity sample. |
| doi_str_mv | 10.1038/s41598-020-70931-0 |
| format | Article |
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2
) thin film on a silicon substrate with a gold back reflector. We experimentally characterize the optical properties of the VO
2
film and use the results to optimize device design. Using a calibrated, transient calorimetry experiment we directly measure the temperature fluctuations arising from a time-varying heat load. Under laboratory conditions, we find that the device regulates temperature better than a constant emissivity sample. We use the experimental results to validate our thermal model, which can be used to predict device performance under the conditions of outer space. In this limit, thermal fluctuations are halved with reference to a constant-emissivity sample.</description><identifier>ISSN: 2045-2322</identifier><identifier>EISSN: 2045-2322</identifier><identifier>DOI: 10.1038/s41598-020-70931-0</identifier><identifier>PMID: 32811889</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>639/624/1075/1082 ; 639/624/399 ; 639/624/400/385 ; Calorimetry ; Emissivity ; Fluctuations ; Humanities and Social Sciences ; multidisciplinary ; Optical properties ; Science ; Science (multidisciplinary) ; Temperature ; Thin films ; Vanadium</subject><ispartof>Scientific reports, 2020-08, Vol.10 (1), p.13964-13964, Article 13964</ispartof><rights>The Author(s) 2020</rights><rights>The Author(s) 2020. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c517t-935743c0bb891a126fe2a5e2eeb119b892a413e520c359389c26862f2aed5453</citedby><cites>FETCH-LOGICAL-c517t-935743c0bb891a126fe2a5e2eeb119b892a413e520c359389c26862f2aed5453</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7435187/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7435187/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,27901,27902,41096,42165,51551,53766,53768</link.rule.ids></links><search><creatorcontrib>Morsy, Ahmed M.</creatorcontrib><creatorcontrib>Barako, Michael T.</creatorcontrib><creatorcontrib>Jankovic, Vladan</creatorcontrib><creatorcontrib>Wheeler, Virginia D.</creatorcontrib><creatorcontrib>Knight, Mark W.</creatorcontrib><creatorcontrib>Papadakis, Georgia T.</creatorcontrib><creatorcontrib>Sweatlock, Luke A.</creatorcontrib><creatorcontrib>Hon, Philip W. C.</creatorcontrib><creatorcontrib>Povinelli, Michelle L.</creatorcontrib><title>Experimental demonstration of dynamic thermal regulation using vanadium dioxide thin films</title><title>Scientific reports</title><addtitle>Sci Rep</addtitle><description>We present an experimental demonstration of passive, dynamic thermal regulation in a solid-state system with temperature-dependent thermal emissivity switching. We achieve this effect using a multilayered device, comprised of a vanadium dioxide (VO
2
) thin film on a silicon substrate with a gold back reflector. We experimentally characterize the optical properties of the VO
2
film and use the results to optimize device design. Using a calibrated, transient calorimetry experiment we directly measure the temperature fluctuations arising from a time-varying heat load. Under laboratory conditions, we find that the device regulates temperature better than a constant emissivity sample. We use the experimental results to validate our thermal model, which can be used to predict device performance under the conditions of outer space. 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C.</au><au>Povinelli, Michelle L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental demonstration of dynamic thermal regulation using vanadium dioxide thin films</atitle><jtitle>Scientific reports</jtitle><stitle>Sci Rep</stitle><date>2020-08-18</date><risdate>2020</risdate><volume>10</volume><issue>1</issue><spage>13964</spage><epage>13964</epage><pages>13964-13964</pages><artnum>13964</artnum><issn>2045-2322</issn><eissn>2045-2322</eissn><abstract>We present an experimental demonstration of passive, dynamic thermal regulation in a solid-state system with temperature-dependent thermal emissivity switching. We achieve this effect using a multilayered device, comprised of a vanadium dioxide (VO
2
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2
film and use the results to optimize device design. Using a calibrated, transient calorimetry experiment we directly measure the temperature fluctuations arising from a time-varying heat load. Under laboratory conditions, we find that the device regulates temperature better than a constant emissivity sample. We use the experimental results to validate our thermal model, which can be used to predict device performance under the conditions of outer space. In this limit, thermal fluctuations are halved with reference to a constant-emissivity sample.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>32811889</pmid><doi>10.1038/s41598-020-70931-0</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | 639/624/1075/1082 639/624/399 639/624/400/385 Calorimetry Emissivity Fluctuations Humanities and Social Sciences multidisciplinary Optical properties Science Science (multidisciplinary) Temperature Thin films Vanadium |
| title | Experimental demonstration of dynamic thermal regulation using vanadium dioxide thin films |
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