Wednesday, April 22, 2009

J. Am. Chem. Soc., 2009, 131 (15), pp 5366–5367

Shape Discrimination with Hexapole−Dipole Interactions in Magic Angle Spinning Colloidal Magnetic Resonance

Pietro Tierno*†, Steffen Schreiber‡, Walter Zimmermann‡ and Thomas M. Fischer‡

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.

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