US Army is developing heat-generating fabric

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Army researchers may make bulky winter clothing a thing of the past. They’re using a coating of fine silver nanowires on ordinary fabrics, such as cotton or polyester, as a way to keep soldiers warm in extreme cold. The nanowire-coating is so fine that it doesn’t alter the flexibility of the fabric and is also washable.  A professor at University of California-San Diego has devised a flexible, stretchable battery that can be incorporated within the textile and is weightless. The technology could ultimately make its way into consumer products. I hope so. I hate it when I'm wearing so many layers that I can't lower my arms.

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