Charge Your Mobile Phones By Singing A Sweet Lullaby To It

Researchers and experts always try to think out of the box. They have once again leveraged such extraordinary thinking by making use of background sounds such as the noise of traffic, restaurants, our voices and even music for materializing a fantastic idea. The energy-harvesting prototype (a nanogenerator) created by scientists from the Queen Mary University of London (QMUL) in association with Microsoft is a gadget that can be charged by using the ubiquitous sounds mentioned earlier.

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The team used zinc oxide for the manufacture of nanorod – an essential component of this device. Zinc oxide is a piezoelectric substance that creates a voltage by converting energy from motion or mechanical energy into electrical energy when it is squashed or stretched. The piezoelectric substance has this ability because they are crystalline in structure. The energy-harvesting can be made adaptable by coating zinc oxide on different surfaces at different locations. The nanorods can generate a high voltage when their surface is squashed or stretched in response to the vibrations and movements created by the sound. They use the electrical contacts between them so that they can harvest the voltage to charge a mobile.

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