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Domain Coarsening in a Two-Dimensional Binary Mixture: Growth Dynamics and Spatial Correlations

Authors
  • Seul, Michael
  • Morgan, Nicole
  • Sire, Clément
Publication Date
Jan 01, 1994
Source
HAL
Keywords
Language
English
License
Unknown
External links

Abstract

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.

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