Rice leaves and butterfly wings provide insight insight into nature’s best self-cleaning surfaces

Source: Phys.Org24/01/2013 – Butterfly wings are characterized by shingle-like scales (above), which keep water from pooling, and microgrooves (below), which repel water and reduce surface adhesion. These features help keep the surface free of debris and contaminants. Credit: Scanning electron microscope image (top) and optical profiler rendering (bottom), courtesy Bharat Bhushan and Greg Bixler, Ohio State…