Issue 18, 2015

Tunable dipolar capillary deformations for magnetic Janus particles at fluid–fluid interfaces

Abstract

Janus particles have attracted significant interest as building blocks for complex materials in recent years. Furthermore, capillary interactions have been identified as a promising tool for directed self-assembly of particles at fluid–fluid interfaces. In this paper, we develop theoretical models describing the behaviour of magnetic Janus particles adsorbed at fluid–fluid interfaces interacting with an external magnetic field. Using numerical simulations, we test the models predictions and show that the magnetic Janus particles deform the interface in a dipolar manner. We suggest how to utilise the resulting dipolar capillary interactions to assemble particles at a fluid–fluid interface, and further demonstrate that the strength of these interactions can be tuned by altering the external field strength, opening up the possibility to create novel, reconfigurable materials.

Graphical abstract: Tunable dipolar capillary deformations for magnetic Janus particles at fluid–fluid interfaces

Article information

Article type
Paper
Submitted
30 Jan 2015
Accepted
13 Mar 2015
First published
16 Mar 2015
This article is Open Access
Creative Commons BY license

Soft Matter, 2015,11, 3581-3588

Author version available

Tunable dipolar capillary deformations for magnetic Janus particles at fluid–fluid interfaces

Q. Xie, G. B. Davies, F. Günther and J. Harting, Soft Matter, 2015, 11, 3581 DOI: 10.1039/C5SM00255A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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