Defect-Mediated Emulsification in Two Dimensions

Details Defect-Mediated Emulsification in Two Dimensions Defect-Mediated Emulsification in Two Dimensions

2008-03-02

arxiv.org/abs/0803.0088v3

Phys. Rev. E 77, 051702 (2008)

Physics

Condensed Matter

Soft Condensed Matter

revtex4, 13 pages, 12 figures

Scientific paper

10.1103/PhysRevE.77.051702

We consider two dimensional dispersions of droplets of isotropic phase in a liquid with an XY-like order parameter, tilt, nematic, and hexatic symmetries being included. Strong anchoring boundary conditions are assumed. Textures for a single droplet and a pair of droplets are calculated and a universal droplet-droplet pair potential is obtained. The interaction of dispersed droplets via the ordered phase is attractive at large distances and repulsive at short distances, which results in a well defined preferred separation for two droplets and topological stabilization of the emulsion. This interaction also drives self-assembly into chains. Preferred separations and energy barriers to coalescence are calculated, and effects of thermal fluctuations and film thickness are discussed.

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