"ENERGY: Team claims midrange wireless energy transfer"

The hurdles to wireless power transfer through space have been perceived to be so great that the last serious work on the topic, reported in the 1920s, was inspired by Nikola Tesla's seminal demonstrations circa 1890. But now an MIT physicist claims the obstacles to wireless power transfer are surmountable, at least for distances under 12 feet. Nonradiative resonant energy transfer harnesses omnidirectional energy beacons without wasting energy, without requiring a clear line of sight and without damaging obstacles in the process. Power from such energy beacons would pass harmlessly through everything but their intended targets, by virtue of resonant power antennas that would be tuned to the power beacon's frequency in a lock-and-key approach.
Text: http://www.eetimes.com/showArticle.jhtml?articleID=194400157