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Chemistry In Pictures

Chemistry in Pictures: A very dry surface

by Manny I. Fox Morone
November 4, 2021

 

The inside of a petri dish covered with a white disk across the bottom of the dish cracked into a series of long shards.
Credit: Shridhar Mundinamani

After trying to make a water-repellent surface coating, Shridhar Mundinamani ended up with this cracked film of silica nanoparticles. Mundinamani, a materials scientist at Siddaganga Institute of Technology, poured a suspension of the nanoparticles into this petri dish, hoping to take advantage of silica’s superhydrophobic properties. But because the solvent dried from the suspension so fast, the resulting film cracked, spontaneously forming this eye-catching tile pattern.

Submitted by Shridhar Mundinamani

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