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Old 11-24-2008, 11:49 AM   #994
alkemical
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http://www.newscientist.com/article/...rss&nsref=tech

Nanotech clothing fabric 'never gets wet'

* 18:02 24 November 2008 by Jon Evans
* For similar stories, visit the Nanotechnology Topic Guide

If you were to soak even your best raincoat underwater for two months it would be wet though at the end of the experience. But a new waterproof material developed by Swiss chemists would be as dry as the day it went in.

Lead researcher Stefan Seeger at the University of Zurich says the fabric, made from polyester fibres coated with millions of tiny silicone filaments, is the most water-repellent clothing-appropriate material ever created.

Drops of water stay as spherical balls on top of the fabric (see image, right) and a sheet of the material need only be tilted by 2 degrees from horizontal for them to roll off like marbles. A jet of water bounces off the fabric without leaving a trace (see second image).
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