superhydrophobic
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Scientists defy gravity with 'perpetual' water pump
Scientists have figured out how to pump water upwards in a thick tube using a combination of surface tension and water-repellent materials. Before you get your hopes up, it's definitely no perpetual-motion machine -- but the discovery from Beihang University researchers in China could bring other benefits. Here's how it works: The right angle pipe shown above is filled with a small amount of water, which can't drain thanks to a copper mesh doped with a superhydrophobic (water-rejecting) material at the bottom. When a small droplet is introduced, it's drawn upward by surface tension, albeit very slowly (the above GIF is sped up about 75 times).
Future Nokia phones repellent, says water (video)
Nokia's latest "super" hydrophobic coating doesn't take half-measures. This new technology binds a layer of nanotech magic to the surface of its devices that literally bounces liquids away. Although we've been told the nanotubes at work here are most effective with water, other liquids (and smudgy fingerprints) should also find the treated surface difficult to latch onto. Due to the thinness of this waterproofing solution, a spokesperson told us here at Nokia World that even the inner workings of a phone could be treated in the same way. No more incidents in the bathroom? Count us in. Check the video after the break for some slo-mo water slippage. %Gallery-137709% Zach Honig contributed to this report.
China's super buoyant, super small copper boats
Researchers in China, inspired by Mother Nature, have developed postage stamp-sized copper mesh boats, "some of the most buoyant" yet devised. Taking a page from both the shark and the lotus, the team applied a rough and uneven coating to the surface of the mesh, which reduces the vessel's contact with water. Next, a hydrophobic was applied, which keeps water from penetrating the porous material, "even when they are carrying a load," according to Dr Qinmin Pan, a chemist from Harbin Institute of Technology. "We believe these boats are some of the strongest ever built - in terms of the mass they can carry." Possible uses for the superhydrophobic material include microfluidic devices (where minuscule amounts of a liquid are used to carry information on a chip) and miniature aquatic robots. As you know, ensuring replicant diversity is an important part of their plan.
