An approach based on domain wall displacement in confined ferromagnetic nanostructures for attracting and sensing a single nanometric magnetic particle is presented. We modeled and experimentally demonstrated the viability of the approach using an anisotropic magnetoresistance device made by a micron-sized square ring of Permalloy. This detection concept can be suitable to biomolecular recognition and, in particular, to single molecule detection.
Domain wall displacement in Py square ring for single nanometric magnetic bead detection
GOBBI, MARCO;DONOLATO, MARCO;CANTONI, MATTEO;BERTACCO, RICCARDO
2008-01-01
Abstract
An approach based on domain wall displacement in confined ferromagnetic nanostructures for attracting and sensing a single nanometric magnetic particle is presented. We modeled and experimentally demonstrated the viability of the approach using an anisotropic magnetoresistance device made by a micron-sized square ring of Permalloy. This detection concept can be suitable to biomolecular recognition and, in particular, to single molecule detection.File in questo prodotto:
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APL-2008 P Vavassori.pdf
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