Sunday 2 August 2015

Your body, the battery: Powering gadgets from human “biofuel”

Science Focus

original post »

Technology has always been intimately linked to the human body. From sharpened flint to smartphones, we've been carrying our inventions for millennia—but the relationship is about to get even closer. The next generation of electronic devices might not just be near our bodies, they could be powered by them.

Staying alive guzzles energy. In order to keep us ticking, our bodies need to burn between 2,000 and 2,500 calories per day, which is conveniently enough to power a modestly used smart phone. So if just a fraction of that energy could be siphoned, our bodies could in theory be used to run any number of electronic devices, from medical implants to electronic contact lenses—all without a battery in sight. Recently, researchers have taken important strides toward unlocking this electric potential.

Untapped potential

To start, the energy in our bodies exists in various forms. Most of them need some manipulation before they can be used to power an electronic device. But not all do.

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 » see original post http://feeds.arstechnica.com/~r/arstechnica/science/~3/IvYJbr7-YGA/
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