Our work on wireless power transfer that will appear at ICRA next month has been picked up by a few blogs. It first appeared on Hizook (a blog for robotics research) and is now showing up at some other blogs as well, including diydrones. I would really recommend reading the Hizook post, which goes into a lot of the details on the history of wireless power transfer. Our paper describing this work is:
B. Griffin and C. Detweiler. Resonant Wireless Power Transfer to Ground Sensors from a UAV. IEEE International Conference on Robotics and Automation (ICRA), 2012, Accepted.
and here is the video again: