Phones Can Now Be Charged through Wi-Fi

The technology invented by American scientists will allow phones to be charged from electromagnetic waves generated by alternating current, such as Wi-Fi-signals.

Conventional charging devices are being ousted from the market by their more functional wireless counterparts. However, even they do have a number of drawbacks: first of all, it is their small operation radius. What is the use of wireless charging, if the signal is very weak, and you cannot walk even two meters away from it with your gadget?

Scientists from the Massachusetts Institute of Technology decided to make chargers more user friendly and invented a device based on the rectifying antenna principle. It allows phones to be charged through Wi-Fi or other electromagnetic waves that are transformed into 10 GHz signals. The device is made of molybdenum disulfide, a 3-atom thick material, which gives the device greater flexibility and efficiency.

The amount of energy that can be generated by the innovation is still small: 40 microwatts of electricity per 150 wave microwatts. But the improvement of its characteristics is a matter of time. What is important is that the start has been made.