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Issue 7, 2016
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Self-assembly of three-dimensional ensembles of magnetic particles with laterally shifted dipoles

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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

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Article information


Submitted
26 Oct 2015
Accepted
08 Jan 2016
First published
08 Jan 2016

This article is Open Access

Soft Matter, 2016,12, 2066-2075
Article type
Paper
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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