Overcoming black body radiation limit in free space: Metamaterial superemitter

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorMaslovski, Stanislav I.en_US
dc.contributor.authorSimovski, Constantin R.en_US
dc.contributor.authorTretyakov, Sergei A.en_US
dc.contributor.departmentDepartment of Radio Science and Engineeringen
dc.contributor.groupauthorSergei Tretiakov Groupen
dc.contributor.groupauthorKostantin Simovski Groupen
dc.contributor.organizationUniversidade de Coimbraen_US
dc.date.accessioned2017-04-28T09:58:36Z
dc.date.available2017-04-28T09:58:36Z
dc.date.issued2016-01-01en_US
dc.description.abstractHere, we demonstrate that the power spectral density of thermal radiation at a specific wavelength produced by a body of finite dimensions set up in free space under a fixed temperature could be made theoretically arbitrary high, if one could realize double negative metamaterials with arbitrary small loss and arbitrary high absolute values of permittivity and permeability (at a given frequency). This result refutes the widespread belief that Planck's law itself sets a hard upper limit on the spectral density of power emitted by a finite macroscopic body whose size is much greater than the wavelength. Here we propose a physical realization of a metamaterial emitter whose spectral emissivity can be greater than that of the ideal black body under the same conditions. Due to the reciprocity between the heat emission and absorption processes such cooled down superemitter also acts as an optimal sink for the thermal radiation - the 'thermal black hole' - which outperforms Kirchhoff-Planck's black body which can absorb only the rays directly incident on its surface. The results may open a possibility to realize narrowband super-Planckian thermal radiators and absorbers for future thermo-photovoltaic systems and other devices.en
dc.description.versionPeer revieweden
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationMaslovski, S I, Simovski, C R & Tretyakov, S A 2016, ' Overcoming black body radiation limit in free space : Metamaterial superemitter ', New Journal of Physics, vol. 18, no. 1, 013034 . https://doi.org/10.1088/1367-2630/18/1/013034en
dc.identifier.doi10.1088/1367-2630/18/1/013034en_US
dc.identifier.issn1367-2630
dc.identifier.otherPURE UUID: 24236703-e6f4-4a5d-8931-498fcb862830en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/24236703-e6f4-4a5d-8931-498fcb862830en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=84957572229&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/12144798/Maslovski_2016_New_J._Phys._18_013034.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/25312
dc.identifier.urnURN:NBN:fi:aalto-201704283715
dc.language.isoenen
dc.relation.ispartofseriesNEW JOURNAL OF PHYSICSen
dc.relation.ispartofseriesVolume 18, issue 1en
dc.rightsopenAccessen
dc.subject.keywordblack bodyen_US
dc.subject.keywordmetamaterialen_US
dc.subject.keywordthermal radiationen_US
dc.titleOvercoming black body radiation limit in free space: Metamaterial superemitteren
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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