Issue 7, 2016

Self-assembly of three-dimensional ensembles of magnetic particles with laterally shifted dipoles

Abstract

We consider a model of colloidal spherical particles carrying a permanent dipole moment which is laterally shifted out of the particles' geometrical centres, i.e. the dipole vector is oriented perpendicular to the radius of the particles. Varying the shift δ from the centre, we analyse ground state structures for two, three and four hard spheres, using a simulated annealing procedure. We also compare earlier ground state results. We then consider a bulk system at finite temperatures and different densities. Using molecular dynamics simulations, we examine the equilibrium self-assembly properties for several shifts. Our results show that the shift of the dipole moment has a crucial impact on both the ground state configurations as well as the self-assembled structures at finite temperatures.

Graphical abstract: Self-assembly of three-dimensional ensembles of magnetic particles with laterally shifted dipoles

Article information

Article type
Paper
Submitted
26 Oct 2015
Accepted
08 Jan 2016
First published
08 Jan 2016
This article is Open Access
Creative Commons BY license

Soft Matter, 2016,12, 2066-2075

Author version available

Self-assembly of three-dimensional ensembles of magnetic particles with laterally shifted dipoles

A. B. Yener and S. H. L. Klapp, Soft Matter, 2016, 12, 2066 DOI: 10.1039/C5SM02648B

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