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By Shane Lasley
Metal Tech News 

A new gold standard for antifog eyewear

Swiss researchers create gold coating that heats up in sunlight Metal Tech News – December 14, 2022


Last updated 12/13/2022 at 2:46pm

Closeup of person with mask and eyeglasses with one fogged and one clear lens.

ETH Zurich

Despite wearing a facemask outside in the cold, the left lens of this individual's glasses (right side from the reader's perspective) is fog-free due to a gold nanocoating developed by scientists at ETH Zurich. The fogged right lens is uncoated.

Swiss researchers have developed a transparent gold nanocoating that vanquishes the perennial nemesis of glasses wearers – fogging.

Unlike traditional antifogging methods, which uses hydrophilic coatings that evenly spread condensation across the surface of the glass, the micro-thin gold layer developed by scientists at ETH Zurich harnesses sunlight to passively heat the lenses to prevent fog...

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