Related Experiment Video
Updated: Dec 1, 2025

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
Published on: July 20, 2022
Tailoring Magnetic Fields in Inaccessible Regions
Rosa Mach-Batlle1,2, Mark G Bason3, Nuria Del-Valle1
1Departament de Física, Universitat Autònoma de Barcelona, Bellaterra 08193, Spain.
Abstract:
Controlling magnetism, essential for a wide range of technologies, is impaired by the impossibility of generating a maximum of magnetic field in free space. Here, we propose a strategy based on negative permeability to overcome this stringent limitation. We experimentally demonstrate that an active magnetic metamaterial can emulate the field of a straight current wire at a distance. Our strategy leads to an unprecedented focusing of magnetic fields in empty space and enables the remote cancellation of magnetic sources, opening an avenue for manipulating magnetic fields in inaccessible regions.
Related Concept Videos
Magnetic Fields
A magnetic field is defined by the force that a charged particle experiences...
Magnetic Field Lines
Magnetic field lines follow several hard-and-fast rules:
Magnetostatic Boundary Conditions
Magnetic Field Of A Current Loop
Magnetic Field Due To A Thin Straight Wire
Divergence and Curl of Magnetic Field

