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A solution-processed radiative cooling glass.
Zhao, Xinpeng; Li, Tangyuan; Xie, Hua; Liu, He; Wang, Lingzhe; Qu, Yurui; Li, Stephanie C; Liu, Shufeng; Brozena, Alexandra H; Yu, Zongfu; Srebric, Jelena; Hu, Liangbing.
Affiliation
  • Zhao X; Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.
  • Li T; Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.
  • Xie H; Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.
  • Liu H; Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.
  • Wang L; Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA.
  • Qu Y; Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53705, USA.
  • Li SC; Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.
  • Liu S; Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.
  • Brozena AH; Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.
  • Yu Z; Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53705, USA.
  • Srebric J; Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA.
  • Hu L; Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.
Science ; 382(6671): 684-691, 2023 Nov 10.
Article in En | MEDLINE | ID: mdl-37943922
ABSTRACT
Passive daytime radiative cooling materials could reduce the energy needed for building cooling up to 60% by reflecting sunlight and emitting long-wave infrared (LWIR) radiation into the cold Universe (~3 kelvin). However, developing passive cooling structures that are both practical to manufacture and apply while also displaying long-term environmental stability is challenging. We developed a randomized photonic composite consisting of a microporous glass framework that features selective LWIR emission along with relatively high solar reflectance and aluminum oxide particles that strongly scatter sunlight and prevent densification of the porous structure during manufacturing. This microporous glass coating enables a temperature drop of ~3.5° and 4°C even under high-humidity conditions (up to 80%) during midday and nighttime, respectively. This radiative "cooling glass" coating maintains high solar reflectance even when exposed to harsh conditions, including water, ultraviolet radiation, soiling, and high temperatures.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2023 Type: Article Affiliation country: United States
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PubMed Links
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2023 Type: Article Affiliation country: United States