Mobile phones to charge-up by the power of your voice?!
The single most irritating thing about our mobile phones is that they constantly need charging up. However, thanks to some brilliantly batshit engineers from South Korea, our chargers could become obsolete.
They're devising a system which would see your phone charging up by the power of your voice. That means your conversations would replenish the power, which is bafflingly great!
Dr Sang-Woo Kim of the institute of nanotechnology at Sungkyunkwan University in Seoul has been talking about a technique that turns energy from sound into electricity.
Kim said: "The sound that always exists in our everyday life and environments has been overlooked as a source. This motivated us to realise power generation by turning sound energy from speech, music or noise into electrical power."
So how does it work? Well, small wires made of zinc oxide are placed between two electrodes and a pad on top vibrates when sound waves hit it. This causes the wires to compress and release, which in turn, would generate an electrical current to charge your battery.
At the moment, 100dB of sound produces 50mV of electricity, which isn't enough to charge a phone. However, these engineers are working on it, meaning that the wires will produce a charge from much lower sounds, meaning that life's background noises will charge your battery.