stays below ambient temperature under maximum solar intensities of mid-summer. It is found to be 11 °C cooler than a commercial white cool roof nearby. A combination of specially chosen polymers and a silver thin film yields values near 100% for both solar reflectance, and thermal emittance at infrared wavelengths from 7.9 to 13 μm.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5115392PMC
http://dx.doi.org/10.1002/advs.201500119DOI Listing

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