University of Bayreuth, Press Release No. 020/2025 - 21 February 2025
Invisibility Cloak for Magnetic Obstacles
Researchers at the University of Bayreuth have developed a method that makes objects on a magnetic field invisible within a particle stream. Until now, this so-called cloaking had only been studied for waves such as light or sound. They report their results in Nature Communications.
The positions of eight colloidal particles at different times (different colors) on a magnetic, deformed checkerboard pattern. At the beginning the arrangement of the eight particles consists of two adjacent quadrilaterals (magenta). The two quadrilaterals encircle the obstacle (the cloak) and are split, rotated and deformed. After passing the cloak, the quadrilaterals are reunited and returned to their original arrangement.
UBT/Fischer