Design by nature

Examples of functional nanostructures are well-known from nature, where organisms and plants posses optical, adhesive and self-cleaning capabilities. 

When colors are created by interaction of light with nanostructures on a surface it is called structural colors. Structural colors are obtained without any pigments. Structural colors are frequently observed in nature - the feathers of birds, the wings butterflies and the shells of beetles are often obtained with nanostructures.

Self-cleaning properties is observed on the surface of the lotus flowers leaf and anti-reflection properties is found in the eye of the moth.

(Drawing by Søren Essendrop)