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Your body could soon power wearable devices

IANS  |  New York 

Researchers have developed a metallic which, when connected to a human body, is capable of generating from bending a and other simple movements.

According to a research project led by the University at Buffalo, New York, and (IoP) at the (CAS), the -- a triboelectric nanogenerator -- can convert into for

"The human body is an abundant source of We thought: 'Why not harness it to produce our own power?'" Qiaoqiang Gan, associate at the University at

The was detailed in the journal Nano Energy.

Triboelectric charging occurs when certain materials become electrically charged after coming into contact with a different material. Most everyday static is triboelectric.

The tab consists of two thin layers of gold, with polydimethylsiloxane (also called PDMS -- a silicon-based polymer used in contact lenses, Silly Putty and other products) sandwiched in between.

One layer of gold is stretched, causing it to crumple upon release and create what looks like a miniature mountain range. When that force is reapplied, for example, from a bending, the motion leads to friction between the gold layers and PDMS.

"This causes electrons to flow back and forth between the gold layers. The more friction, the greater the amount of power is produced," said Yun Xu, at the IoP.

The study described a small tab (1.5 centimetres long, by one centimetre wide).

It delivered a maximum voltage of 124 volts, a maximum current of 10 microamps and a maximum power density of 0.22 millwatts per square centimetre.

That is not enough to quickly charge a smartphone, but it lit 48 red LED lights simultaneously.

The team is planning to use larger pieces of gold, which when stretched and folded together are expected to deliver even more

The researchers are also working on developing a portable battery to store energy produced by the tab.

They envision the system serving as a power source for various wearable and



(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)

First Published: Sun, February 11 2018. 11:50 IST