Directory For a Sex Photos : discoverynews: Water Droplets Bounce Off Laser-etched Metal Researchers from the University of Rochester have used a laser to etch micro-sized and nano-sized structures into metals that make the surfaces permanently repel water. The technique could lead
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» discoverynews: Water Droplets Bounce Off Laser-etched Metal Researchers from the University of Rochester have used a laser to etch micro-sized and nano-sized structures into metals that make the surfaces permanently repel water. The technique could lead