Scientists propose high-efficiency wireless power transfer system

(Phys.org)—Currently, commercial wireless power transfer is limited mainly to charging pads for phones: instead of plugging your phone directly into the wall, simply place it on top of a wireless charging pad. In the future, the same concept could be extended to much larger distances and higher transfer efficiencies, enabling entire rooms and even buildings to serve as wireless charging zones for phones, computers, and other electronic devices.