A model of magnetic bubble propagation patterns using surface charge embedded in a minimum domain configuration

Controlled transport of magnetic particles using soft magnetic patterns

“…Trapping and transport can be understood with a magnetic surface charge model, 14 where the magnetic surface charge density, and hence the energy potential experienced by a superparamagnetic bead close to the surface, changes with the direction of the rotating field. In this model, charge concentrates at small radii of curvature parallel to the magnetic field, providing the deepest trapping potentials.…”