Researchers have developed a small metal tab that when attached to the body can generate electricity from bending a finger and other simple movements
Searching for a charging point for a mobile phone or tablet could soon be a thing of the past.
Researchers have developed a small metal tab that when attached to the body can generate electricity from bending a finger and other simple movements.
The 1.5cm tab is made up of two sheets of gold with a layer of silicon in between.
When bent the motion leads to friction between the gold layers.
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This causes electrons to flow back and forth between the gold layers, which produces power.
In trials the tab delivered a maximum voltage of 124 volts and lit 48 red LED lights simultaneously.
Lead researcher Qiaoqiang Gan, of the University of Buffalo in New York, said: "No one likes being tethered to a power outlet or lugging around a portable charger.