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Issue 14, 2011
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Janus particles at an oil–water interface

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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

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Publication details

The article was received on 16 Mar 2011, accepted on 16 May 2011 and first published on 09 Jun 2011

Article type: Communication
DOI: 10.1039/C1SM05460K
Citation: Soft Matter, 2011,7, 6413-6417

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    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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