Magnetic energy harvesting and concentration at distance by transformation optics

TL;DR

This paper presents a novel magnetic shell designed by transformation optics that can efficiently concentrate, transfer, and distribute magnetic energy in free space, enabling advanced magnetic energy management.

Contribution

The work introduces a magnetic shell device capable of concentrating, transferring, and distributing magnetic energy at a distance with high efficiency, using transformation optics.

Findings

Achieves large magnetic energy concentration in free space.

Enables enhanced magnetic coupling between sources.

Allows magnetic energy transfer across empty space.

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.