Issue 14, 2011

Janus particles at an oil–water interface

Abstract

We study the behaviour of Janus particles at an oil–water interface. Amphiphilic Janus particles exhibit attractive interactions at the fluid–fluid interface. The attractive interactions are likely due to the pinning of contact line around the diffuse boundary between the two hemispheres. The undulation of the three-phase contact line around Janus particles leads to quadrupolar capillary interactions, which we confirm by measuring the interparticle forces. We also show that Janus particles with two negatively charged-hydrophilic hemispheres show repulsive interactions.

Graphical abstract: Janus particles at an oil–water interface

Supplementary files

Article information

Article type
Communication
Submitted
16 Mar 2011
Accepted
16 May 2011
First published
09 Jun 2011

Soft Matter, 2011,7, 6413-6417

Janus particles at an oil–water interface

B. J. Park, T. Brugarolas and D. Lee, Soft Matter, 2011, 7, 6413 DOI: 10.1039/C1SM05460K

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