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Domain coarsening in a two-dimensional binary mixture: Growth dynamics and spatial correlations

Late-stage coarsening in a 2D binary mixture has been investigated via direct imaging of "bubble" domains in an amphiphilic monolayer at an air-water interface. In a regime with growth exponent n≃0.28 for the mean domain radius, the radius distribution exhibits dynamic scaling, closely app...

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Bibliographic Details
Published in:Physical review letters 1994-10, Vol.73 (17), p.2284-2287
Main Authors: Seul, M, Morgan, NY, Sire, C
Format: Article
Language:English
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Summary:Late-stage coarsening in a 2D binary mixture has been investigated via direct imaging of "bubble" domains in an amphiphilic monolayer at an air-water interface. In a regime with growth exponent n≃0.28 for the mean domain radius, the radius distribution exhibits dynamic scaling, closely approaching a Gaussian shape. The local structure of disordered bubble patterns ensures short-range screening of topological charge. Pattern statistics correspond to equilibrated random Voronoi lattices and indicate a prominent role of entropy maximization. Pattern stabilization against bubble coalescence is attributed to electrostatic interactions.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.73.2284