Science plans 'non-stick' submarine US nanotechnologists are developing what they think could be the ultimate non-stick surface. The needles are just a couple of millionths of a metre apart It is covered with nano-scale needles that enable a liquid, for example, to slip straight off it. One application could be non-stick submarines, which would glide through the water with much less resistance and require less force and fuel to propel them. "If you think about submarines in a marine environment, the defence department will be very excited to hear about this," CJ Kim, an engineer at the University of California...