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Article: A Thermal Radiation Modulation Platform by Emissivity Engineering with Graded Metal–Insulator Transition

TitleA Thermal Radiation Modulation Platform by Emissivity Engineering with Graded Metal–Insulator Transition
Authors
Keywordsemissivity engineering
infrared camouflage
materials platforms
metal–insulator transition
thermal radiation
Issue Date2020
PublisherWiley-VCH Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/publish/en/journals/alphabeticIndex/2089
Citation
Advanced Materials, 2020, v. 32 n. 36, p. article no. 1907071 How to Cite?
AbstractThermal radiation from a black body increases with the fourth power of absolute temperature (T4), an effect known as the Stefan–Boltzmann law. Typical materials radiate heat at a portion of this limit, where the portion, called integrated emissivity (εint), is insensitive to temperature (|dεint/dT| ≈ 10−4 °C–1). The resultant radiance bound by the T4 law limits the ability to regulate radiative heat. Here, an unusual material platform is shown in which εint can be engineered to decrease in an arbitrary manner near room temperature (|dεint/dT| ≈ 8 × 10−3 °C–1), enabling unprecedented manipulation of infrared radiation. As an example, εint is programmed to vary with temperature as the inverse of T4, precisely counteracting the T4 dependence; hence, thermal radiance from the surface becomes temperature-independent, allowing the fabrication of flexible and power-free infrared camouflage with unique advantage in performance stability. The structure is based on thin films of tungsten-doped vanadium dioxide where the tungsten fraction is judiciously graded across a thickness less than the skin depth of electromagnetic screening.
Persistent Identifierhttp://hdl.handle.net/10722/307746
ISSN
2023 Impact Factor: 27.4
2023 SCImago Journal Rankings: 9.191
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorTang, K-
dc.contributor.authorWang, X-
dc.contributor.authorDong, K-
dc.contributor.authorLi, Y-
dc.contributor.authorLi, J-
dc.contributor.authorSun, B-
dc.contributor.authorZhang, X-
dc.contributor.authorDames, C-
dc.contributor.authorQiu, C-
dc.contributor.authorYau, J-
dc.contributor.authorWu, J-
dc.date.accessioned2021-11-12T13:37:13Z-
dc.date.available2021-11-12T13:37:13Z-
dc.date.issued2020-
dc.identifier.citationAdvanced Materials, 2020, v. 32 n. 36, p. article no. 1907071-
dc.identifier.issn0935-9648-
dc.identifier.urihttp://hdl.handle.net/10722/307746-
dc.description.abstractThermal radiation from a black body increases with the fourth power of absolute temperature (T4), an effect known as the Stefan–Boltzmann law. Typical materials radiate heat at a portion of this limit, where the portion, called integrated emissivity (εint), is insensitive to temperature (|dεint/dT| ≈ 10−4 °C–1). The resultant radiance bound by the T4 law limits the ability to regulate radiative heat. Here, an unusual material platform is shown in which εint can be engineered to decrease in an arbitrary manner near room temperature (|dεint/dT| ≈ 8 × 10−3 °C–1), enabling unprecedented manipulation of infrared radiation. As an example, εint is programmed to vary with temperature as the inverse of T4, precisely counteracting the T4 dependence; hence, thermal radiance from the surface becomes temperature-independent, allowing the fabrication of flexible and power-free infrared camouflage with unique advantage in performance stability. The structure is based on thin films of tungsten-doped vanadium dioxide where the tungsten fraction is judiciously graded across a thickness less than the skin depth of electromagnetic screening.-
dc.languageeng-
dc.publisherWiley-VCH Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/publish/en/journals/alphabeticIndex/2089-
dc.relation.ispartofAdvanced Materials-
dc.rightsSubmitted (preprint) Version This is the pre-peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. Accepted (peer-reviewed) Version This is the peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.-
dc.subjectemissivity engineering-
dc.subjectinfrared camouflage-
dc.subjectmaterials platforms-
dc.subjectmetal–insulator transition-
dc.subjectthermal radiation-
dc.titleA Thermal Radiation Modulation Platform by Emissivity Engineering with Graded Metal–Insulator Transition-
dc.typeArticle-
dc.identifier.emailZhang, X: president@hku.hk-
dc.identifier.authorityZhang, X=rp02411-
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1002/adma.201907071-
dc.identifier.pmid32700403-
dc.identifier.scopuseid_2-s2.0-85088322577-
dc.identifier.hkuros329909-
dc.identifier.volume32-
dc.identifier.issue36-
dc.identifier.spagearticle no. 1907071-
dc.identifier.epagearticle no. 1907071-
dc.identifier.isiWOS:000551119200001-
dc.publisher.placeGermany-

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