Charge your phone with noise

Researchers from Nokia and Queen Mary London (UK) used noise to charge mobile phones.

They use zinc oxide nanoparticles as a sheet of paper attached to the phone. Like other piezoelectric materials, this zinc oxide nanoparticle bends to respond to sound waves and produces electricity.

The scientists began by spraying a thin layer of zinc oxide on a plastic sheet, followed by a special chemical layer and heated to 90 degrees Celsius, which made the zinc oxide nanoparticles.

To get the voltage generated, the nanoscale must be clamped by two contact points that were previously made of gold, and now gold is replaced by aluminum, resulting in a significant price drop.

The prototype of this energy-saving phone is the size of a Nokia Lumina 925, capable of producing up to 5 volts when it receives noise from car horns, music, voices ...

Gizmag quoted Dr. Joe Briscoe of Queen Mary London University as saying that the new technology will make cell phones work long hours, even removing traditional batteries.