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Dynamics of interfacial wetting near the roughening transition

M Grant, K Kaski and K Kankaala

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Theoretical and computer simulation results are presented for the effect of fluctuations on the dynamics of layer growth during complete wetting. For example, in two dimensions the authors predict a crossover in the dynamics of the layer thickness W, from Lipowsky's result, W approximately t1/4, for all non-zero temperatures in a lattice-gas system, to W approximately (ln t)1/2 at zero temperature (the roughening transition temperature) for intermediate times. Simulations of wetting in the three-state chiral Potts model give W approximately tpsi , where Psi is 0.25+or-0.03 for temperatures T>or=0.6 Tc, where Tc is the critical temperature, while the effective exponent Psi monotonically decreases with T below this temperature.


PACS

68.08.Bc Wetting

64.60.F- Equilibrium properties near critical points, critical exponents

05.50.+q Lattice theory and statistics (Ising, Potts, etc.)

MSC

82B26 Phase transitions (general)

82B20 Lattice systems (Ising, dimer, Potts, etc.) and systems on graphs

82B27 Critical phenomena

Subjects

Soft matter, liquids and polymers

Surfaces, interfaces and thin films

Condensed matter: structural, mechanical & thermal

Statistical physics and nonlinear systems

Dates

Issue 9 (21 June 1987)



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