Single Particle Multipole Expansions From Micromagnetic Tomography.

ABSTRACT: Micromagnetic tomography aims at reconstructing large numbers of individual magnetizations of magnetic particles from combining high-resolution magnetic scanning techniques with micro X-ray computed tomography (microCT). Previous work demonstrated that dipole moments can be robustly inferred, and mathematical analysis showed that the potential field of each particle is uniquely determined. Here, we describe a mathematical procedure to recover higher orders of the magnetic potential of the individual magnetic particles in terms of their spherical harmonic expansions (SHE). We test this approach on data from scanning superconducting quantum interference device microscopy and microCT of a reference sample. For particles with high signal-to-noise ratio of the magnetic scan we demonstrate that

SUBMITTER: Cortes-Ortuno D 

PROVIDER: S-EPMC8243950 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature