28 February 2012

Self cleaning surfaces

Image source

Butterflies and other big winged insects have an ability to clean their wings without using energy or any chemicals.

The wings of the Morpho butterfly have a special structure, which in extremely water repellent. Rough surfaces can reduce adhesive forces on water droplets. When the wing is moving just a tiny bit the water droplets roll off taking the dirt with them.

This is has now inspired to self-cleaning paint.

Catrin S

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