Say goodbye to fogged up glasses, thanks to an innovative ultra-thin transparent gold nanocoating. Developed by ETH Zurich researchers, this nearly invisible material is capable of converting sunlight into heat and can also be applied to glass and other surfaces to prevent them from fogging, whether it be eyewear or even car windshields.
Unlike traditional anti-fog methods that have surfaces coated with water-attracting (hydrophilic) molecules, this new innovation heats the surface, thus preventing humidity-induced condensation from forming there in the first place. Think of it as the same principle as the one used for a car’s rear window, which is heated passively and requires, during daytime, no additional energy source.
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The pane coating absorbs infrared rays from the sun, which specifically heats the pane and prevents the radiation from reaching the inside of the car or building. As a result, the interior heats up even less than it would without the coating,” said Iwan Hächler, ETH doctoral student.
