In the Future, We can Charge Our Smartphone via Wi-Fi
Researchers from MIT and the University of Madrid are already doing tests.
The issue of batteries in smartphones is one that has given us much to talk about and has always been one of the problems for manufacturers.
Thinking about the different ways of obtaining energy for mobile devices, a team of researchers from MIT and the University of Madrid has developed a flexible system that can transform electromagnetic waves into electrical energy. It is a structure that can be integrated into fabrics, covers for objects and whatever comes to mind.
The interesting part and that has the potential to revolutionize the world of energy, is that the signals emitted by radio, WiFi and Bluetooth towers, present in all cities, would allow an average of about 40 microwatts, enough to operate small devices or turn on LED lights.
The MIT researchers have made an antenna of this type that uses molybdenum sulphide as the main material, an extremely thin semiconductor that can be used to make sheets with only a few atoms. The first prototypes made, are not entirely efficient, since they only convert 30% of the energy at low power, but still can feed small sensors for medical devices.
The idea is to develop this antenna to make it capable of driving devices that require more energy and without having a battery inside (or perhaps replace large batteries with smaller ones).
Another possibility is that they could distribute these thin sheets on walls and ceilings so they can capture electromagnetic energy and convert it so that devices connected to homes or buildings can use it.