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arXiv · 1501.07707

Tunable Dipolar Capillary Deformations for Magnetic Janus Particles at Fluid-Fluid Interfaces

Qingguang Xie·Gary B. Davies·Florian Günther·Jens Harting
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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.

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Qingguang Xie, Gary B. Davies, Florian Günther, Jens Harting. 2015-03-12. Tunable Dipolar Capillary Deformations for Magnetic Janus Particles at Fluid-Fluid Interfaces. https://arxiv.org/abs/1501.07707

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