Reference:
http://www.sciencedaily.com/releases/2013/07/130731122512.htm (collected)
A team of researchers discovered that resonance frequency matching, alignment of the magnetic field, and impedance matching are the most important factors for efficient wireless power transfer. These findings are highly significant, because one futuristic application of wireless power transfer would be to harness and use it via magnetic resonance to charge electric vehicles.
Corresponding coils attached to the bottom of an electric vehicle would pick up energy as the vehicle passes over the coils embedded in the highway. With this type of dynamic charging, an electric vehicle's driving range could become unlimited and the size of its batteries would be greatly reduced.
Wireless power transfer technology may find use in a wide range of applications beyond powering electric vehicles, said Xiaofang Yu, an electrical engineer and postdoctoral fellow at Stanford University who led the research.
Other applications may include charging mobile devices, home appliances, or even medical devices implanted in the human body.
