Posts Tagged ‘ Nanogenerator ’

Charging Phones Using Everyday Noise

Charging Mobile Phones using soundMobile phones may someday be able to recharge using the sounds around them. This can be possible with the help of piezoelectric property of zinc oxide, when the zinc oxide nano-rods are squashed, stretched or bent, they produce a voltage. The nano-rods can be coated onto various surfaces in different locations making the energy harvesting quite versatile. The zinc oxide nano-rods respond to vibration and movement created by everyday sound, such as our voices too. Researchers are working on it from many years to design a nanogenerator which can be used to power devices like mobile phones and now they somewhat succeeded in it.

Few years ago, a few Korean scientists had proposed using sound to charge mobile phones. They explained that it could be done by utilizing piezoelectric effect, in which zinc oxide nano-wires converted sound-caused vibrations into electricity. At the time, the researchers couldn’t generate enough of a voltage to actually charge a phone. But now as per recent research, scientists from Nokia and Queen Mary University of London have succeeded in doing so.

Scientists from Queen Mary University of London and researchers at Nokia built a mobile device that can be refueled when everyday background noise, including traffic and music, is converted into electricity. In future, it could be possible to charge mobile phones using everyday background noise such as traffic, music, cheers from a football field or chatter from a coffee shop and our own voices.

Scientists are now able to generate five volts by using this method, which is enough to charge a phone. Certainly, this technology can change the way we charge our devices if it will make its way to the smartphone industry. It’s still a thing of future and matter of research so far.

Reference: Mobile phones come alive with the sound of music