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Switchable Cavitation in Silicone Coatings for Energy-Saving Cooling and Heating

  • Abstract Space cooling and heating currently result in huge amounts of energy consumption and various environmental problems. Herein, a switching strategy is described for efficient energy-saving cooling and heating based on the dynamic cavitation of silicone coatings that can be reversibly and continuously tuned from a highly porous state to a transparent solid. In the porous state, the coatings can achieve efficient solar reflection (93%) and long-wave infrared emission (94%) to induce a subambient temperature drop of about 5 °C in hot weather (≈35 °C). In the transparent solid state, the coatings allow active sunlight permeation (95%) to induce solar heating to raise the ambient temperature from 10 to 28 °C in cold weather. The coatings are made from commercially available, cheap materials via a facile, environmentally friendly method, and are durable, reversible, and patternable. They can be applied immediately to various existed objects including rigid substrates.

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Document Type:Article
Author:Huaixia Zhao, Qiangqiang Sun, Ji Zhou, Xu Deng, Jiaxi CuiORCiD
Parent Title (English):Advanced Materials
First Page:2000870
Year of first Publication:2020
Release Date:2022/11/18
Impact:30.849 (2020)
Funding Information:National Natural Science Foundation of China (5197302321704012) Bundesministerium für Bildung und Forschung (031A360D) Alexander von Humboldt-Stiftung
Open Access:Open Access
Signature:INM 2020/063
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International