Effect of the anisotropic surface tension, crystallization kinetics, and heat diffusion on nonequilibrium growth of liquid crystals

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15 Citations (Scopus)

Abstract

The morphologies of a homeotropic smectic-B germ growing into an undercooled homeotropic or planar nematic melt were studied. The two sets of growth shapes observed in the experiment were reproduced by computer simulations using a phase-field model. From the comparison of the experiment and numerical simulations we give an estimate for the anisotropy of the surface tension and the kinetic coefficient for the case of the homeotropic nematic melt. In the case of the planarly aligned melt the twofold anisotropy of the nematic superimposes onto the hexagonal symmetry of the smectic B. An explanation of the phenomenon of the "inverted growth" is given.

Original languageEnglish
Pages (from-to)6236-6245
Number of pages10
JournalPhysical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Volume58
Issue number5 B
Publication statusPublished - Nov 1998

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Heat Diffusion
Crystallization
Surface Tension
Liquid Crystal
Non-equilibrium
interfacial tension
Kinetics
liquid crystals
crystallization
heat
anisotropy
Anisotropy
kinetics
Phase Field Model
computerized simulation
Hexagon
Experiment
symmetry
Computer Simulation
coefficients

ASJC Scopus subject areas

  • Mathematical Physics
  • Physics and Astronomy(all)
  • Condensed Matter Physics
  • Statistical and Nonlinear Physics

Cite this

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AU - Börzsönyi, T.

AU - Buka, A.

AU - Kramer, L.

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N2 - The morphologies of a homeotropic smectic-B germ growing into an undercooled homeotropic or planar nematic melt were studied. The two sets of growth shapes observed in the experiment were reproduced by computer simulations using a phase-field model. From the comparison of the experiment and numerical simulations we give an estimate for the anisotropy of the surface tension and the kinetic coefficient for the case of the homeotropic nematic melt. In the case of the planarly aligned melt the twofold anisotropy of the nematic superimposes onto the hexagonal symmetry of the smectic B. An explanation of the phenomenon of the "inverted growth" is given.

AB - The morphologies of a homeotropic smectic-B germ growing into an undercooled homeotropic or planar nematic melt were studied. The two sets of growth shapes observed in the experiment were reproduced by computer simulations using a phase-field model. From the comparison of the experiment and numerical simulations we give an estimate for the anisotropy of the surface tension and the kinetic coefficient for the case of the homeotropic nematic melt. In the case of the planarly aligned melt the twofold anisotropy of the nematic superimposes onto the hexagonal symmetry of the smectic B. An explanation of the phenomenon of the "inverted growth" is given.

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