The Morning After: A super-thin layer of gold and titanium can prevent fogged glass

All I want for Christmas is for my glasses not to fog up. And Swiss scientists can make that wish come true. ETH Zurich researchers have developed a gold nano-coating that absorbs large amounts of infrared radiation, heating the glass up to 46 degrees Fahrenheit and ensuring your glasses don’t fog up. Most sparing treatments diffuse water using hydrophilic molecules, but this nano-thin layer can even stop condensation from forming.

The research group believes the layer could also reduce fog on car windshields, and future applications could work on mirrors, windows and more. The coating places gold between layers of titanium oxide, which enhances the heating effect through fracture and protects the gold from corrosion – titanium is much more durable. And while gold is expensive, the amount needed is so small that it shouldn’t add much to the price of your glasses if the technology makes its way into mainstream eyeglasses.

– Matt Smith

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