Bio-inspired nanostructured glass is anti-fogging, liquid resistant: Page 2 of 2

July 29, 2019 //By Julien Happich
Bio-inspired
Together with California-based software company SigOpt, researchers from the University of Pittsburgh Swanson School of Engineering have designed a nanostructured glass that combines anti-fogging and liquid resistant properties with ultra clarity and self-healing properties.

The results published in the journal Materials Horizons under the title “Creating glasswing butterfly-inspired durable antifogging superomniphobic supertransmissive, superclear nanostructured glass through Bayesian learning and optimization” is a glass that is 99.5% transparent, when random nanostructures (smaller than the wavelengths of visible light) are designed on both sides.


Comparing the wetting capability of various liquid droplets
on a non-treated glass surface (left) and a structured glass
surface (right).
Courtesy of professor Paul Leu/University of Pittsburgh.

This high transparency can reduce the brightness and power demands on displays that could, for example, extend battery life. The glass is also antireflective across higher angles, improving viewing from different directions, with a low haze less than 0.1%. The glass is so liquid-repellent that it even resists condensation droplets smaller than 2μm, they roll off the surface, making it naturally antifogging.

What’s more, the surface can restore its liquid-repellency after physical damage through heating for 15 minutes. The researchers are now busy developing a commercially viable process to manufacture the new glass.

University of Pittsburgh - www.pitt.edu

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