Effects of an embedding bulk fluid on phase separation dynamics in a thin liquid film

Ramachandran, S.; Komura, S.; Gompper, G.

doi:10.1209/0295-5075/89/56001

Journal Article

PreJuSER-9209

Effects of an embedding bulk fluid on phase separation dynamics in a thin liquid film

Ramachandran, S.FZJ* ; Komura, S.FZJ* ; Gompper, G.FZJ*

2010
EDP Sciences Les Ulis

epl 89, 56001 (2010) [10.1209/0295-5075/89/56001]

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Please use a persistent id in citations: http://hdl.handle.net/2128/22974 doi:10.1209/0295-5075/89/56001

Abstract: Using dissipative-particle-dynamics simulations, we study the effects of an embedding bulk fluid on the phase separation dynamics in a thin planar liquid film. The domain growth exponent is altered from 2D to 3D behavior upon the addition of a bulk fluid, even though the phase separation occurs in 2D geometry. Correlated diffusion measurements in the film show that the presence of bulk fluid changes the nature of the longitudinal coupling diffusion coefficient from logarithmic to algebraic dependence of 1/s, where s is the distance between the two particles. This result, along with the scaling exponents, suggests that the phase separation takes place through the Brownian coagulation process. Copyright (C) EPLA, 2010

Keyword(s): J

Classification:

Physics, Multidisciplinary

Note: This work was supported by KAKENHI (Grant-in-Aid for Scientific Research) on Priority Area "Soft Matter Physics" and Grant No. 21540420 from the Ministry of Education, Culture, Sports, Science and Technology of Japan.

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