October 3rd news, researchers at Columbia Engineering Company invented a high-performance external PDRC polymer coating with nano-to-micron air voids, which can be used not only as a spontaneous air cooler, but also on roofs, buildings, etc. Objects, water tanks, vehicles, even spaceships-anything that can be painted, crafted, dyed and painted. Related research results have been published online in the journal Science.
Researchers have found that the high solar reflectance (R> 96%) and high thermal emissivity (ε ~ 97%) of the polymer coating make it cooler than ambient temperature in wide sky. The material was confirmed to be capable of temperatures as low as 6 degrees Celsius in the hot and arid deserts of Arizona and 3 degrees Celsius in the foggy tropical environment of Bangladesh. This fact proves the usefulness of the research results in places where cooling is needed.