American Physical Society Synopsys  May 29, 2018
Magnetic cloaks typically use superconducting materials, which must be cooled to cryogenic temperatures. An international team of researchers (China, Sweden) has built a room-temperature cloak that does not employ superconductors. Such a cloak could be useful in shielding sensitive devices from external magnetic fields. Their cloak consists of a hollow cylinder made of several foils of a high-magnetic-permeability material with copper wires running along the cylinder’s length. When currents pass through the wires shields the interior of the cylinder from external magnetic fields. Experiments demonstrated that the device works at room temperature for static magnetic fields about 20 times stronger than Earth’s magnetic field. The current can be adjusted to optimize cloaking under different external magnetic-field or environmental conditions… read more. TECHNICAL ARTICLEÂ
W. Jiang et al., Phys. Rev. Applied (2018)