"Power dressing" may soon have a very different and literal meaning.
Scientists in the US have developed novel brush-like fibres that generate electrical energy from movement.
Weaving them into a material could allow designers to create "smart" clothes which harness body movement to power portable electronic gadgets.
Writing in the journal Nature, the team say that the materials could also be used in tents or other structures to harness wind energy.
"Our goal is to make self-powered nanotechnology," Professor Zhong Lin Wang of the Georgia Institute of Technology and one of the authors of the paper told BBC News.
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Tags: Energy, Nanowires

EfficienCity is a virtual town, but pioneering, real world communities around the UK are using similar systems. As a result, they're enjoying lower greenhouse gas emissions, a more secure energy supply, cheaper electricity and heating bills and a whole new attitude towards energy.
While our government promotes the fallacy that we need coal and nuclear to keep the lights on, innovative councils, businesses and individuals are taking the leap into a cleaner, greener future with decentralised energy.

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Tags: Energy, Efficiencity GreenPeace