When Windows Learn to Manage Heat

What if windows could reject solar heat while letting indoor warmth escape? Lumenco Scientific is developing a solar-control film that could change how buildings manage heat. Its secret lies in a single patterned layer of microscopic metal shapes, engineered to reflect incoming infrared radiation while admitting daylight. Unlike conventional multilayer films, the design also allows excess interior heat to radiate outward, potentially reducing cooling demand without darkening rooms. The company reports over 63% solar energy rejection alongside more than 60% visible light transmission, with no interference to Wi-Fi, GPS or mobile signals. Simpler manufacturing could also make high-performance glazing treatments […]