ArticleBody:A material that’s more transparent than glass without sacrificing privacy sounds like an impossibility, but an ultrathin film designed by researchers at Germany’s Karlsruhe Institute of Technology does just that. The new polymer-based microphotonic multifunctional metamaterial owes its abilities to silicone “micro-pyramids,” each one-tenth the diameter of a human hair, and is more transparent than a window. When layered atop glass, however, PMMM still obscures any objects behind it.
This means that while light is technically brighter than when it passes through a usual window, objects still look blurry like in frosted glass. The complex interplay between the small structures and incoming light creates additional benefits, too.
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