Aggregation kinetics and the nature of phase separation in two-dimensional dipolar fluids

Peter D. Duncan, Philip J. Camp

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Abstract

The kinetics of aggregation in a monolayer of dipolar particles are studied using stochastic dynamics computer simulations. Transient concentrations of end defects (at low density) and Y-shaped defects (at high density) clearly exceed those at equilibrium. Although very large dipole moments are expected to disfavor such defects at equilibrium, it is found that the transient defect concentrations increase with increasing dipole moment. The results suggest that the conditions for defect-driven condensation-as proposed by Tlusty and Safran [T. Tlusty and S. A. Safran, Science 290, 1328 (2000)]-could be met by kinetic trapping, giving rise to a metastable phase transition between isotropic fluid phases.

Original languageEnglish
Article number107202
Pages (from-to)-
Number of pages4
JournalPhysical Review Letters
Volume97
Issue number10
DOIs
Publication statusPublished - 8 Sep 2006

Keywords

  • HARD-SPHERES
  • TEMPERATURE
  • FERROFLUIDS
  • SIMULATION
  • DYNAMICS

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