A Transparent all-dielectric multifunctional Nanoantenna emitter compatible with thermal infrared and cooling scenarios

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buir.contributor.authorKhalihi, Bahram
buir.contributor.authorGhobadi, Amir
buir.contributor.authorOsgouei, Ataollah Kalantari
buir.contributor.authorKoçer, Hasan
buir.contributor.authorÖzbay, Ekmel
buir.contributor.orcidKhalihi, Bahram|0000-0002-9465-1044
buir.contributor.orcidGhobadi, Amir|0000-0002-8146-0361
buir.contributor.orcidOsgouei, Ataollah Kalantari|0000-0002-0971-7687
buir.contributor.orcidKoçer, Hasan|0000-0003-4107-3014
buir.contributor.orcidÖzbay, Ekmel|0000-0003-2953-1828
dc.citation.epage98602en_US
dc.citation.spage98590en_US
dc.citation.volumeNumber9en_US
dc.contributor.authorGhobadi, Amir
dc.contributor.authorOsgouei, Ataollah Kalantari
dc.contributor.authorKoçer, Hasan
dc.contributor.authorÖzbay, Ekmel
dc.date.accessioned2022-01-24T11:07:13Z
dc.date.available2022-01-24T11:07:13Z
dc.date.issued2021-06-30
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentDepartment of Physicsen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractIn modern thermal infrared applications, multi-spectral camouflage scenarios should be developed to mitigate the thermal signature of an object. In general, camouflage needs to be satisfied in two main optical ranges: visible, and infrared (IR). In the IR range, two main camera modes are deployed to detect the IR signature of an object: i) short-wave IR (SWIR) cameras that detect the solar photons reflected off a surface, ii) mid-wave IR (MWIR) and long-wave IR (LWIR) cameras that directly collect the blackbody photons emitted from a hot object. Therefore, in an ideal scheme to acquire a multi-spectral camouflage function with self-cooling capability, the object should have: i) perfect absorption in the SWIR range, ii) perfect reflection in the MWIR and LWIR ranges, iii) perfect absorption and one-way transmission in non-transmissive IR (NTIR) window (to radiatively cool itself), and iv) visible transparency (to keep background visual appearance intact and to minimize the heat build-up due to solar absorption). In this paper, an all-dielectric nanoantenna emitter design is developed to comply with all the above-mentioned requirements. The approach relies on the indium tin oxide (ITO) grating structures coated on a flexible and transparent substrate (polystyrene). The spectral behaviors of the proposed structure are obtained using both analytical and numerical approaches. The design has an absorption peak with 0.8 amplitude in the SWIR mode (for the backward and forward illuminations), while it shows average reflections ≅ 0.7 in the MWIR and LWIR ranges for the forward illumination. The peak values of transmission and absorption within the NTIR window for the forward illumination are around 0.6 and 0.9, respectively. Meanwhile, the use of lossless materials within the visible range provides visible light transmission and minimizes the heat build-up due to solar absorption. In addition, the radiated power calculation model is utilized to demonstrate the low power detection on the IR cameras.en_US
dc.identifier.doi10.1109/ACCESS.2021.3093704en_US
dc.identifier.eissn2169-3536
dc.identifier.urihttp://hdl.handle.net/11693/76763
dc.language.isoEnglishen_US
dc.publisherIEEEen_US
dc.relation.isversionofhttps://doi.org/10.1109/ACCESS.2021.3093704en_US
dc.source.titleIEEE Accessen_US
dc.subjectBinary gratingen_US
dc.subjectNanoantenna emitter/absorberen_US
dc.subjectPlasmonic structureen_US
dc.subjectThermal infrared applicationsen_US
dc.subjectThermal camouflageen_US
dc.titleA Transparent all-dielectric multifunctional Nanoantenna emitter compatible with thermal infrared and cooling scenariosen_US
dc.typeArticleen_US
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Department of Physics
Institute of Materials Science and Nanotechnology (UNAM)