This dual-function coating reflects up to 99% of solar radiation and emits heat as longwave infrared radiation into space, utilizing the phenomenon of “radiative cooling.” This process takes advantage of the atmospheric transparency window, enabling heat disposal into the cold universe. The earth also cools itself similarly, though less intensely.
Assistant Research Scientist Xinpeng Zhao, the study’s first author, highlights the material’s durability and environmental stability. It can withstand water, UV radiation, dirt, flames, and temperatures up to 1,000 degrees Celsius. This versatility allows application on various surfaces like tile, brick, and metal.
The cooling glass aligns with global efforts to reduce energy consumption and combat climate change. Professor Hu points to the recent extreme heat, emphasizing the material’s significance in building a cooler, greener world.
Co-authors from the University of Wisconsin-Madison, Professors Jelena Srebric and Zongfu Yu, contributed expertise in CO2 savings and structure design. The team, optimistic about commercialization, has formed CeraCool to advance and market the technology.
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