University of Washington engineers have designed the first battery-free cellphone that can send and receive calls using only a few microwatts of power.
The University of Washington in Seattle are moving beyond chargers, cords and dying phones. Instead, they have developed a phone that harvests few microwatts of power that it requires from either ambient radio signals or light.
this new development is a game changer in the world of mobile phones and their efficiency and dependability.
As such phones can work without charging they can have a vast field of application and demand.
The team also made Skype calls using its battery-free phone, demonstrating that the prototype made of commercial, off-the-shelf components can receive and transmit speech and communicate with a base station.
even though its a great innovation there is still a long way to go before that happens. The phone has a basic touch-sensitive number pad and its only display is a tiny red LED that glows briefly when a key is pressed. A large touchscreen would require around 400 milliwatts—over one hundred thousand times as much as it uses now.
But soon it might also happen as what they have done now was not even imagined in previous years.