期刊
NANO LETTERS
卷 13, 期 4, 页码 1457-1461出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl4004283
关键词
Radiative cooling; thermal radiation; broadband solar mirror; phonon-polariton; selective emission
类别
资金
- Alberta Scholarship Programs' Sir James Lougheed Award of Distinction
If properly designed, terrestrial structures can passively cool themselves through radiative emission of heat to outer space. For the first time, we present a metal-dielectric photonic structure capable of radiative cooling in daytime outdoor conditions. The structure behaves as a broadband mirror for solar light, while simultaneously emitting strongly in the mid-IR within the atmospheric transparency window, achieving a net cooling power in excess of 100 W/m(2) at ambient temperature. This cooling persists in the presence of significant convective/conductive heat exchange and nonideal atmospheric conditions.
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