Superlens Transmits Wireless Power Over Longer Distances

Jan-16-14 Duke University researchers have created a “superlens” able to wirelessly transmit power over a much larger distance than current models, which could have a significant impact on the growing need to wirelessly power electrical devices.

The team used metamaterials to create the “superlens,” which demonstrated the ability to focus low-frequency magnetic fields by translating the field from one power coil onto a second coil almost a foot away, inducing an electric current in the second coil.

Previously, experiments involving metamaterial wireless power devices were only successful in transmitting power approximately the same distance as the diameter of the coils, which means that it would take a very large coil to transmit power over any significant distance. In contrast, the “superlens” would allow for the use of smaller sources and/or receivers to provide longer-distance charging.

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[PHYS.ORG]
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