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arXiv · 1207.7030

Magnetic energy harvesting and concentration at distance by transformation optics

Carles Navau·Jordi-Prat Camps·Alvaro Sanchez
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Abstract

Magnetic energy is one the main agents powering our society: generating energy in power plants, keeping information in magnetic memories, moving our devices with motors. All of these applications require a certain spatial distribution of magnetic energy, for example concentrating it in a transformer core or in a magnetic sensor. We introduce in this work a way to collect magnetic energy and distribute it in space with unprecedented efficiency and flexibility, allowing very large concentration of magnetic energy in a free space region, an enhanced magnetic coupling between two magnetic sources, and the transfer of magnetic energy from a source to a given distant point separated by empty space. All these features are achieved with a single device, a magnetic shell designed by transformation optics.

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Carles Navau, Jordi-Prat Camps, Alvaro Sanchez. 2012-07-30. Magnetic energy harvesting and concentration at distance by transformation optics. https://doi.org/10.1103/physrevlett.109.263903

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