Disordered and densely packed ITO nanorods as an excellent lithography-free optical solar reflector metasurface for the radiative cooling of spacecraft

buir.contributor.orcidÖzbay, Ekmel|0000-0003-2953-1828en_US
dc.citation.epage10en_US
dc.citation.spage1en_US
dc.citation.volumeNumber11080en_US
dc.contributor.authorYıldırım, Deniz Umuten_US
dc.contributor.authorGhobadi, Amiren_US
dc.contributor.authorSoydan, Mahmut Canen_US
dc.contributor.authorAteşal, Okanen_US
dc.contributor.authorToprak, Ahmeten_US
dc.contributor.authorÇalışkan, Mehmet Denizen_US
dc.contributor.authorÖzbay, Ekmelen_US
dc.contributor.bilkentauthorYıldırım, Deniz Umut
dc.contributor.bilkentauthorGhobadi, Amir
dc.contributor.bilkentauthorSoydan, Mahmut Can
dc.contributor.bilkentauthorAteşal, Okan
dc.contributor.bilkentauthorToprak, Ahmet
dc.contributor.bilkentauthorÇalışkan, Mehmet Deniz
dc.contributor.bilkentauthorÖzbay, Ekmel
dc.coverage.spatialSan Diego, California, United Statesen_US
dc.date.accessioned2020-01-30T11:36:14Z
dc.date.available2020-01-30T11:36:14Z
dc.date.issued2019
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.descriptionDate of Conference: 11-15 August 2019en_US
dc.descriptionConference Name: SPIE Nanoscience + Engineering, 2019en_US
dc.description.abstractOptical Solar Reflectors (OSRs) form the physical interface between the spacecraft and space and they are essential for the stabilization and uniform distribution of temperature throughout the spacecraft. OSRs need to possess a spectrally selective response of broadband and perfect electromagnetic wave absorption in the thermal-infrared spectral range, while strongly reflecting the solar energy input. In this work, we experimentally show that disordered and densely packed ITO nanorod forests can be used as an excellent top-layer metasurface in a metal-insulator-oxide cavity configuration, and a thermal-emissivity of 0.97 is experimentally realized in the spectral range from 2.5 to 25 μm. The low-loss dielectric response of ITO in the solar spectrum, from 300 nm to 2.5 μm range limited the solar absorptivity to an experimental value of 0.167. These make our proposed design highly promising for its application in space missions due to combining high throughput, robustness, low cost with ultra-high performance.en_US
dc.description.sponsorshipThe Society of Photo-Optical Instrumentation Engineers (SPIE)en_US
dc.identifier.doi10.1117/12.2529003en_US
dc.identifier.isbn9781510628533
dc.identifier.issn0277-786X
dc.identifier.urihttp://hdl.handle.net/11693/52930
dc.language.isoEnglishen_US
dc.publisherSPIEen_US
dc.relation.isversionofhttps://dx.doi.org/10.1117/12.2529003en_US
dc.source.titleProceedings of SPIE Vol. 11080, Metamaterials, Metadevices, and Metasystems 2019en_US
dc.subjectMetasurfacesen_US
dc.subjectOblique-angle depositionen_US
dc.subjectRadiative coolingen_US
dc.subjectOptical solar re ectorsen_US
dc.subjectTransparent conductive oxidesen_US
dc.subjectPlasmonicsen_US
dc.titleDisordered and densely packed ITO nanorods as an excellent lithography-free optical solar reflector metasurface for the radiative cooling of spacecraften_US
dc.typeConference Paperen_US
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