Scientists at the University of Rochester in New York have developed "self-cleaning" metal that enables water droplets to gather dust particles, then bounce and slide away.The physicists, from the University of Rochester in New York, reported their findings in the Journal of Applied Physics. Previous efforts to produce "super-hydrophobic" surfaces have relied on coatings, but this approach permanently changes the shape of the metal's surface. Water droplets released from 2cm above the surface bounce back to a height of 5mm, maintaining 30% of their energy.
