Science. 2007 Jul 6;317(5834):83-6. Epub 2007 Jun 7.

Wireless power transfer via strongly coupled magnetic resonances.

Kurs A, Karalis A, Moffatt R, Joannopoulos JD, Fisher P, Soljacic M.

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Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. akurs@mit.edu

Abstract

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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Science. 2007 Jul 6;317(5834):55-6.

PMID:: 17556549; [PubMed]

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Wireless power transfer via strongly coupled magnetic resonances.

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