• About
  • Policies
  • What is open access
  • Library
  • Contact
Advanced search
      View Item 
      •   BUIR Home
      • Scholarly Publications
      • Faculty of Engineering
      • Department of Electrical and Electronics Engineering
      • View Item
      •   BUIR Home
      • Scholarly Publications
      • Faculty of Engineering
      • Department of Electrical and Electronics Engineering
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

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

      Thumbnail
      View / Download
      7.6 Mb
      Author(s)
      Yıldırım, Deniz Umut
      Ghobadi, Amir
      Soydan, Mahmut Can
      Ateşal, Okan
      Toprak, Ahmet
      Çalışkan, Mehmet Deniz
      Özbay, Ekmel
      Date
      2019
      Source Title
      Proceedings of SPIE Vol. 11080, Metamaterials, Metadevices, and Metasystems 2019
      Print ISSN
      0277-786X
      Publisher
      SPIE
      Volume
      11080
      Pages
      1 - 10
      Language
      English
      Type
      Conference Paper
      Item Usage Stats
      181
      views
      1,622
      downloads
      Abstract
      Optical 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.
      Keywords
      Metasurfaces
      Oblique-angle deposition
      Radiative cooling
      Optical solar re ectors
      Transparent conductive oxides
      Plasmonics
      Permalink
      http://hdl.handle.net/11693/52930
      Published Version (Please cite this version)
      https://dx.doi.org/10.1117/12.2529003
      Collections
      • Department of Electrical and Electronics Engineering 3863
      • Department of Physics 2484
      • Institute of Materials Science and Nanotechnology (UNAM) 2098
      • Nanotechnology Research Center (NANOTAM) 1125
      Show full item record

      Browse

      All of BUIRCommunities & CollectionsTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsCoursesThis CollectionTitlesAuthorsAdvisorsBy Issue DateKeywordsTypeDepartmentsCourses

      My Account

      Login

      Statistics

      View Usage StatisticsView Google Analytics Statistics

      Bilkent University

      If you have trouble accessing this page and need to request an alternate format, contact the site administrator. Phone: (312) 290 2976
      © Bilkent University - Library IT

      Contact Us | Send Feedback | Off-Campus Access | Admin | Privacy