U.S. 8,541,094 B2
Empire Technology Development has received a patent for a coated substrate comprised of a substrate and a coating on the substrate, the coating is configured to change between a relatively higher reflectivity state and a relatively lower reflectivity state depending at least partially upon a temperature of at least a portion of the coating, the coating is comprised of a selectively reflective layer comprised of a plurality of microcapsules, the plurality of microcapsules comprised of an ionic liquid and a surfactant within a shell, the plurality of microcapsules having a relatively higher reflectively when at temperatures above a cloud transition temperature and a relatively lower reflectivity when at temperatures below the cloud transition temperature; wherein, when at temperatures above the cloud transition temperature, the selectively reflective layer reflects a first fraction of incident light; and when at temperatures below the cloud transition temperature, the selectively reflective layer reflects a second fraction of the incident light, the first fraction of the incident light being greater than the second fraction of the incident light.
Temperature Controlled Variable Reflectivity Coatings
Published January 14, 2014
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