Domain growth near a wall in spinodal decomposition

1994 ◽  
Vol 72 (23) ◽  
pp. 3738-3738 ◽  
Author(s):  
P. Keblinski ◽  
W. J. Ma ◽  
A. Maritan ◽  
J. Koplik ◽  
J. R. Banavar
Keyword(s):  
Spinodal Decomposition ◽  
Domain Growth

Spontaneous pinning of domain growth during spinodal decomposition of off‐critical polymer mixtures

1992 ◽  
Vol 97 (1) ◽  
pp. 679-689 ◽  
Author(s):  
Takeji Hashimoto ◽  
Mikihito Takenaka ◽  
Tatsuo Izumitani
Keyword(s):  
Spinodal Decomposition ◽  
Domain Growth ◽  
Polymer Mixtures

Mechanisms which can Accelerate the Growth of Phase Separating Domains Near a Wall

1992 ◽  
Vol 290 ◽  
Author(s):  
Sandra M. Troian
Keyword(s):  
Spinodal Decomposition ◽  
Experimental Tests ◽  
Domain Growth ◽  
Scattering Data ◽  
Polymer Mixtures ◽  
Phase Coarsening ◽  
Accelerated Growth ◽  
Domain Growth Kinetics ◽  
Surface Domains ◽  
Average Size

AbstractThough the dynamics of bulk phase separation during spinodal decomposition is fairly well understood nowadays, recent experiments have shown that the same process occuring near a wall introduces some surprisingly fast domain growth kinetics. Studies of both polymer mixtures and simple binary fluids at critical composition quenched into the unstable regime reveal the presence of a fast mode associated with domains coarsening at the wall. The scattering data indicates that while the bulk domains grow in time as t1/3, as dictated by usual diffusion driven dynamics, the surface domains coarsen with exponents ranging from about 1.1 to 1.5 depending on the quench depth. We construct a model in which the average size of domains in a binary mixture undergoing spinodal decomposition near a wall can achieve growth exponents much larger than 1/3. The accelerated growth is associated with the domains of the non-wetting phase coarsening anisotropically against a wall coated with the wetting phase.The faster growth evolves from coupling Lifshitz-Slyozov type coarsening for critical volume fractions, modified to include the geometric constraint of growth near a wall, the process of domain coalescence. Included are some predictions for experimental tests of these ideas.

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