Two German physicists have reimagined how to create powerful and uniform magnetic fields using compact permanent magnets. By overcoming the limitations of the well-known Halbach array, which works only with infinitely long magnets, they engineered innovative 3D magnet arrangements that work in practical, finite-size setups. Their designs not only boost field strength but also enhance homogeneity, verified through real-world experiments. This game-changing advancement could help bring affordable MRI technology to underserved regions and power applications like particle accelerators and magnetic levitation systems.
