Magnetic omniconversion: Source-independent molding of magnetostatic fields
- 1Departament de Física, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
- 2Department of Microtechnology and Nanoscience (MC2), Chalmers University of Technology, SE-412 96 Gothenburg, Sweden.
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 original possibilities in magnetic shielding, targeted field delivery, advanced imaging technologies, and a broad range of field-control applications.
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BibTeX
@article{cunillsubiranas2026magnetic,
title = {{Magnetic omniconversion: Source-independent molding of magnetostatic fields}},
author = {Jaume Cunill-Subiranas and Natanael Bort-Soldevila and Fabian Resare and Nuria Del-Valle and Witlef Wieczorek and Carles Navau},
journal = {Science Advances},
year = {2026},
month = oct,
doi = {10.1126/sciadv.aeh5747},
url = {https://www.science.org/doi/10.1126/sciadv.aeh5747},
note = {CC BY},
}
RIS
TY - JOUR
TI - Magnetic omniconversion: Source-independent molding of magnetostatic fields
AU - Jaume Cunill-Subiranas
AU - Natanael Bort-Soldevila
AU - Fabian Resare
AU - Nuria Del-Valle
AU - Witlef Wieczorek
AU - Carles Navau
PY - 2026
DA - 2026/10/09
JO - Science Advances
DO - 10.1126/sciadv.aeh5747
UR - https://www.science.org/doi/10.1126/sciadv.aeh5747
AB - 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 original possibilities in magnetic shielding, targeted field delivery, advanced imaging technologies, and a broad range of field-control applications.
SN - 2375-2548
ER -