Domain wall displacement in Py square ring for single nanometric magnetic bead detection
arXiv:0809.4649 · doi:10.1063/1.3030984
Abstract
A new approach based on the domain wall displacement in confined ferromagnetic nanostructures for attracting and sensing a single nanometric magnetic particles is presented. We modeled and experimentally demonstrated the viability of the approach using an anisotropic magnetoresistance device made by a micron-size square ring of Permalloy designed for application in magnetic storage. This detection concept can be suitable to biomolecular recognition, and in particular to single molecule detection.
8pages, 3figures