Nanograss Glass (IMAGE)

Optica

Nanograss Glass

Caption

New glass etched with nanograss structures can be switched from hazy to clear by applying water. As shown here, removing the water from the glass makes it appear hazy again. This switchable glass could offer a simple and inexpensive way to make smart windows that change between clear and opaque.

Credit

Sajad Haghanifar, University of Pittsburgh

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