Georgia: Battery charges from microphone sound waves

Georgia Institute of : Επιστήμονες ανέπτυξαν ένα μικρόφωνο από the size of a postage stamp, which could charge your phone's battery using sound.Georgia music sound

Researchers from Georgia Institute of Technology used one to cut a grid of tiny holes in the paper. They then coated one side with copper and placed it on a thin sheet of Teflon, joining the two sheets at one end.

The sound waves vibrate the two sheets in different ways, causing them to pulsate, which creates an electrical , similar to that created by rubbing a balloon on one's hair, reports New Scientist.

The microphone can also be used as a new way of sound energy from the environment, and could collect the free electrical energy from the "waste" that is heard all around us.

The amount of power the microphone provides depends on its size, but it is about 121 milliwatts per square meter.

"It can be made in any size you want," Zhong Wang said Georgia Institute of Technology.

However, Wang said that if a stamped microphone is placed on the phone, it will provide little energy that will not be enough to fully charge the phone.

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Written by Dimitris

Dimitris hates on Mondays .....

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