A safe way to wirelessly charge devices in a room is developed
In the laboratory of Disney Research a group of scientists consisting of Matthew Habalko, Mohsen Shahmohammadi and Alanson Sempl developed a system of wireless power transmission, which provides charging of electronic devices indoors. Method was called the “quasistatic resonance cavity” (QSCR).
To demonstrate its effect, a room with a size of 5 x 5 meters was specially constructed in the laboratory. Inside it, magnetic waves were generated, constantly charging several mobile phones and energizing the ventilation and interior lighting of the room.
The idea of wireless transmission of energy is not the first century that stirs the minds of scientists. Suffice it to recall the grandiose experiments of Nikola Tesla in the 90s of the XIX century, during which he demonstrated wireless lighting.
The QSCR method consists in exciting electric current in metallized walls and ceiling, which contributes to the creation of a uniform magnetic field. As a result, the energy is transferred to the receiving coils operating at the same resonant frequency as the magnetic fields. The currents in the structure are induced through separated capacitors, which isolate potentially dangerous electric fields .
Despite the use of metal-covered walls in the experimental room, scientists believe that in the future the design can be simplified. For this purpose, special wall panels or conductive paint are suitable.