Magnetic omniconversion: Source-independent molding of magnetostatic fields.

Magnetic fields can be passively converted into any desired configuration within a source-free region using source-independent field shaping with linear magnetic materials.

• Why it matters: Controlling magnetic fields independently of their sources addresses a fundamental limitation in magnetic field design, enabling new applications in shielding, imaging, and targeted field delivery.
• What they did: The authors developed a general framework for magnetic field molding, providing analytical and numerical demonstrations, along with a proof-of-concept experiment validating the approach.
• The result: This method broadens the possibilities for magnetic field control, potentially transforming technologies in shielding, imaging, and other applications requiring precise magnetic field manipulation.