Beat the Heat: Novel Passive Cooling Device for Surfaces and Enclosed Spaces

The first passive radiative device that absorbs heat from the inside of an enclosure and emits it on the outside
The bottom layer of the Janus emitter absorbs the heat inside the vehicle and emits it through the top layer to the atmosphere (indicated in blue), causing a temperature drop. The right image shows an experimental model that simulates a vehicle. Photo credit: Young Min Song/GIST

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