Thermal tuning of infrared resonant absorbers based on hybrid gold-VO<inf>2</inf> nanostructures

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dc.citation.issueNumber16en_US
dc.citation.volumeNumber106en_US
dc.contributor.authorKocer H.en_US
dc.contributor.authorButun, S.en_US
dc.contributor.authorBanar, B.en_US
dc.contributor.authorWang, K.en_US
dc.contributor.authorTongay, S.en_US
dc.contributor.authorWu J.en_US
dc.contributor.authorAydin, K.en_US
dc.date.accessioned2016-02-08T09:55:12Z
dc.date.available2016-02-08T09:55:12Z
dc.date.issued2015en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractResonant absorbers based on plasmonic materials, metamaterials, and thin films enable spectrally selective absorption filters, where absorption is maximized at the resonance wavelength. By controlling the geometrical parameters of nano/microstructures and materials' refractive indices, resonant absorbers are designed to operate at wide range of wavelengths for applications including absorption filters, thermal emitters, thermophotovoltaic devices, and sensors. However, once resonant absorbers are fabricated, it is rather challenging to control and tune the spectral absorption response. Here, we propose and demonstrate thermally tunable infrared resonant absorbers using hybrid gold-vanadium dioxide (VO<inf>2</inf>) nanostructure arrays. Absorption intensity is tuned from 90% to 20% and 96% to 32% using hybrid gold-VO<inf>2</inf> nanowire and nanodisc arrays, respectively, by heating up the absorbers above the phase transition temperature of VO<inf>2</inf> (68°C). Phase change materials such as VO<inf>2</inf> deliver useful means of altering optical properties as a function of temperature. Absorbers with tunable spectral response can find applications in sensor and detector applications, in which external stimulus such as heat, electrical signal, or light results in a change in the absorption spectrum and intensity. © 2015 AIP Publishing LLC.en_US
dc.identifier.doi10.1063/1.4918938en_US
dc.identifier.issn0003-6951
dc.identifier.urihttp://hdl.handle.net/11693/22081
dc.language.isoEnglishen_US
dc.publisherAmerican Institute of Physics Inc.en_US
dc.relation.isversionofhttp://dx.doi.org/10.1063/1.4918938en_US
dc.source.titleApplied Physics Lettersen_US
dc.subjectAbsorption spectroscopyen_US
dc.subjectFilmsen_US
dc.subjectGolden_US
dc.subjectLight absorptionen_US
dc.subjectNanostructuresen_US
dc.subjectNanowiresen_US
dc.subjectOptical propertiesen_US
dc.subjectRefractive indexen_US
dc.subjectAbsorption filtersen_US
dc.subjectAbsorption intensityen_US
dc.subjectExternal stimulusen_US
dc.subjectNanostructure arraysen_US
dc.subjectResonance wavelengthsen_US
dc.subjectSelective absorptionen_US
dc.subjectSpectral absorptionsen_US
dc.subjectThermophotovoltaic devicesen_US
dc.subjectPhase change materialsen_US
dc.titleThermal tuning of infrared resonant absorbers based on hybrid gold-VO<inf>2</inf> nanostructuresen_US
dc.typeArticleen_US

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