title: Shape discrimination with hexapole-dipole interactions in magic angle spinning colloidal magnetic resonance.
abstract: We have studied the interactions between magnetically driven, DNA-linked anisotropic and isotropic colloidal rotors interacting via induced magnetic dipolar and multipolar forces. We show that a balance between magnetic dipole-dipole and dipole-hexapole interactions near the magic angle allows discrimination between spherical and anisotropic magnetic colloidal rotors.
authors.affiliation: Departament de Química Física, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain. ptierno@ub.edu
authors.forename: Pietro
authors.initials: P
authors.lastname: Tierno
authors.forename: Steffen
authors.initials: S
authors.lastname: Schreiber
authors.forename: Walter
authors.initials: W
authors.lastname: Zimmermann
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Fischer