Abstract
This paper introduces radiative cooling metamaterial use in engineering thermal radiation based on metal-multi-dielectric-metal (MMDM) structure. The measured average absorption of the MMDM from 15° to 75° in the “atmosphere window” is 0.81, and the absorption range of the structure hardly changes with the incident angles. Without considering solar radiation, at the thermal conductivity of , the surface temperature is 10.8°C lower than the ambient temperature (300 K), and the cooling power is . Importantly, when the surface temperature is higher than the ambient temperature, this radiative cooler can lower the surface temperature in engineering thermal radiation with a higher thermal conductivity at the same cooling power.
© 2019 Optical Society of America
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