Researchers from Japan and the United States have developed a wireless charging method, which will charge portable electronics anywhere in the room. The article of the researchers was published in the journal Nature Electronics.
Wireless charging technologies have already allowed to feed gadgets – however, those must be in a fixed state at a distance of several centimeters from the charging station. Researchers from Tokyo and Michigan universities have developed the so-called multimodal quasi-static weight resonance method, allowing you to make a single system of wireless energy transmission from the room.
In this method, the conductive surfaces built into the walls create three-dimensional power lines of the magnetic field that allow you to transmit over 50 watts of electricity to the device in a three-by-three-meter room. It can take her device anywhere in the room, even being in motion – however, the receiving coils attached to it must be located at the right angle to the magnetic field.
The minimum efficiency of electricity transmission in such a way is 37 percent – and on most of the space room it exceeds 50 percent. The developers emphasize that their method is safe – the indicators of energy transmission indicators in biological tissues do not exceed the standards for irradiation with magnetic fields established by the US Federal Commission and the Institute of Electrical Engineering Engineers and Electronics.