Manipulating magnetic fields in inaccessible regions by negative magnetic permeability
arXiv:1912.12477 · doi:10.1103/PhysRevLett.125.177204
Abstract
The control of magnetic fields underpins a wide variety of cutting-edge technologies, ranging from the guiding of micro-robots for medical applications to the trapping of atoms for quantum experiments. Relying on different arrangements of coils, these technologies demand advances in the manipulation of magnetic fields at a distance from the sources that generate them. Here, we present a strategy for remotely shaping magnetic fields based on active magnetic metamaterials with negative permeability and we theoretically and experimentally demonstrate the possibility of emulating and cancelling magnetic sources at distance. Our strategy provides magnetic field focusing deep into physically inaccessible volumes where neither sources of magnetic field nor magnetic materials can be placed.
arXiv commentmain text: 5 pages, 4 figures; supplementary material: 18 pages, 13 figures, 1 table
References in corpus (7)
- Cylindrical Superlens by a Coordinate Transformation
- Magnetic energy harvesting and concentration at distance by transformation optics
- Near Field Lenses in Two Dimensions
- A spherical perfect lens
- Long-Distance Transfer and Routing of Static Magnetic Fields
- Magnetic illusion: transforming a magnetic object into another object by negative permeability
- Negative permeability in magnetostatics and its experimental demonstration