Inventor Nikola Tesla imagined the technology to transmit energy through thin air almost a century ago, but experimental attempts at the feat have so far resulted in cumbersome devices that only work

Duke University students discovered metamaterial superlens that vastly improves wireless power transfer. A side view of the metamaterial “superlens.” Both its width and thickness affects how far it can boost the wireless transfer of power using electromagnetic fields. Credit courtesy of Duke University

Duke University students discovered metamaterial superlens that vastly improves wireless power transfer. A side view of the metamaterial “superlens.” Both its width and thickness affects how far it can boost the wireless transfer of power using electromagnetic fields. Credit courtesy of Duke University

over very small distances. But now, Duke University researchers have demonstrated the feasibility of wireless power transfer using low-frequency magnetic fields over distances much larger than the size of the transmitter and receiver. Duke University students discovered metamaterial superlens that vastly improves wireless power transfer. A side view of the metamaterial “superlens.” Both its width and thickness affects how far it can boost the wireless transfer of power using electromagnetic fields. Credit courtesy of Duke University

 

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