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Cotton with special coating collects water from fogs in desert

Phys.org/news (Jan 21, 2013 )

Titre : Cotton with special coating collects water from fogs in desert

Phys.org/news (Jan 21, 2013 )

Présentation
Eindhoven University of Technology (TU/e) researchers together with researchers at the Hong Kong Polytechnic University (PolyU), have developed a special treatment for cotton fabric that allows the cotton to absorb exceptional amounts of water from misty air : 340% of its own weight. What makes this ’coated cotton’ so interesting is that the cotton releases the collected water by itself, as it gets warmer. This property makes of the coated cotton materials a potential solution to provide water to the desert regions, for example for agricultural purposes. The results of this research will be published next month in the scientific journal Advanced Materials.

Inspiration from nature
Beetles in desert areas can collect and drink water from fogs, by capturing water droplets on their bodies, which roll into their mouths. Similarly, some spiders capture humidity on their silk network. This was the inspiration for this new coated-cotton material, which collects and releases water from misty environments simply as the temperature changes throughout the day.

Source  : Eindhoven University of Technology

Annonce (Phys.org/news)

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