Wireless power transfer via strongly coupled magnetic resonances.

@article{Kurs2007WirelessPT,
  title={Wireless power transfer via strongly coupled magnetic resonances.},
  author={Andre Kurs and Aristeidis Karalis and Robert J. Moffatt and John D. Joannopoulos and Peter Charles Fisher and Marin Solja{\vc}i{\'c}},
  journal={Science},
  year={2007},
  volume={317 5834},
  pages={
          83-6
        }
}
Using self-resonant coils in a strongly coupled regime, we experimentally demonstrated efficient nonradiative power transfer over distances up to 8 times the radius of the coils. We were able to transfer 60 watts with approximately 40% efficiency over distances in excess of 2 meters. We present a quantitative model describing the power transfer, which matches the experimental results to within 5%. We discuss the practical applicability of this system and suggest directions for further study. 

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