Issue 18, 2010

Repulsive force between two attractive dipoles, mediated by nanoparticles inside a ferrofluid

Abstract

For ferromagnetic microparticles immersed in a ferrofluid, the usual magnetic dipolar attraction between them is shown to disappear when they are still far from each other. We demonstrate that this behavior is due to the existence of a new repulsive force induced by a local inhomogeneity in the concentration of nanoparticles between the two particles.

Graphical abstract: Repulsive force between two attractive dipoles, mediated by nanoparticles inside a ferrofluid

Article information

Article type
Communication
Submitted
15 Apr 2010
Accepted
14 Jul 2010
First published
11 Aug 2010

Soft Matter, 2010,6, 4346-4349

Repulsive force between two attractive dipoles, mediated by nanoparticles inside a ferrofluid

M. T. López-López, A. Yu. Zubarev and G. Bossis, Soft Matter, 2010, 6, 4346 DOI: 10.1039/C0SM00261E

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