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These Liquid-Repelling Materials Defy Nature’s Design, Here’s How

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Channel: Seeker
Categories: Chemistry   |   Science  
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Materials with liquid-repelling properties are for more than just your phone. They can reduce drag for boats and help heat transfer at nuclear plants. Here’s how scientists are making these seemingly impossible materials.

These Strange Metals Could Make Electronics Perfectly Efficient -

Thumbnail image reprinted (adapted) with permission from Toward Condensation-Resistant Omniphobic Surfaces, Kyle L. Wilke et al. Copyright 2018 American Chemical Society.

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Repellent Research: Navy Developing Ship Coatings to Reduce Fuel, Energy Costs
“Of particular interest to the Navy is how omniphobic coatings can reduce friction drag—resistance created by the movement of a hull through water—on ships, submarines and unmanned underwater vessels.”

Surface Tension & Water
“Because of the relatively high attraction of water molecules for each other, water has a higher surface tension (72.8 mN/m at 20°C, 68°F) compared to the surface tension of many other liquids.”

A New Approach to Liquid-Repelling Surfaces
“One local defect can destroy the entire surface’s ability to repel liquids,” he says. And condensation, such as dew forming because of a temperature difference between the air and the surface, acts in the same way, destroying the omniphobicity.”


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