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arXiv · 2603.01155

Magnetic Omniconversion: Source-Independent Molding of Magnetostatic Fields

Jaume Cunill-Subiranas·Natanael Bort-Soldevila·Fabian Resare·Nuria Del-Valle·Witlef Wieczorek·Carles Navau
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Abstract

Magnetic fields are constrained by the geometry and location of their sources, limiting the ability to freely tailor their spatial distribution. We introduce a general framework to passively convert the magnetic field generated by arbitrary sources into any prescribed desired field within a finite source-free region. Our method relies on field shaping using linear magnetic materials, enabling source-independent magnetic-field molding. We provide the general recipe, analytical and numerical demonstrations for some paradigmatic examples, and a proof-of-concept experiment that validates the idea and materials implementation. This approach enables novel possibilities in magnetic shielding, targeted field delivery, advanced imaging technologies, and a broad range of field-control applications.

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Jaume Cunill-Subiranas, Natanael Bort-Soldevila, Fabian Resare, Nuria Del-Valle, Witlef Wieczorek, Carles Navau. 2026-03-01. Magnetic Omniconversion: Source-Independent Molding of Magnetostatic Fields. https://arxiv.org/abs/2603.01155

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