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Phoenix666 writes:

Researchers are already working to create smart skin that embeds sensors that mimic the tactile feedback of human skin, making it possible for amputees to feel pressure, temperature and even dampness. But how to power the futuristic material?

A team from the University of Glasgow in the UK has come up with a version that harnesses the sun's rays. Because it produces its own energy from a natural source, the engineers say, the electronic skin would operate longer than similar materials powered by batteries or tethered to a power source that would also limit portability, clearly a key feature of any everyday prosthetic or touch-sensitive robot on the go.

The team of engineers attached a layer of power-generating photovoltaic cells to the back of a sensor-laden prosthetic hand. The sensors are made from graphene, a flexible material that's stronger than steel, electrically conductive and transparent.

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