Everyone have experienced the anguish of a device running out of power just when you need it the most.
Imagine the scenario that you would not have to charge your smartphone ever again. Wow! Is that possible?
Well, we are maybe a step closer to a battery-free future; thanks to the engineers from the University of Washington.
These researches from University of Washington have just constructed the world’s first battery-free phone.
The phone is powered by a few microwatts of ambient radio signals and light that are harvested from the surrounding area.
“We have built what we believe is the first functioning cell phone that consumes almost zero power,” said Shyam Gollakota, associate professor at the University of Washington via The Indian Expess.
By eliminating the need for phones to convert analog sound into digital data, researchers were able to create a device that required little to no energy to perform basic functions. Additionally, the phone is only constructed out of cheap, off-the-shelf parts, and a circuit board.
The team has also demonstrated this by making a Skype call with the prototype; showing that it can receive and transmit speech as well as communicate with a base station.
On the current prototype, a user must press a button to move between sending and receiving modes, and the phone needs to be within about 30 feet of a radio base station to operate. The group plans to improve those aspects of the device going forward.
Watch the video below for a demonstration of the device: