Science Buddies: "Ask an Expert"

This is likely past any topic generally covered in high school, but for a science project involving wireless electricity, are there any more electromagnetic resonant systems other than dialectric disks and capacitively-loaded conducting-wire loops?

http://witricity.com/technology/technical-papers/ -->Efficient wireless non-radiative mid-range energy transfer by Aristeidis Karalis, J.D. Joannopoulos and Marin Soljačić