Phase separation in a simple model with dynamical asymmetry
Data(s) |
01/01/1999
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Resumo |
We perform computer simulations of a Cahn-Hilliard model of phase separation that has dynamical asymmetry between the two coexisting phases. The dynamical asymmetry is incorporated by considering a mobility function that is order parameter dependent. Simulations of this model reveal morphological features similar to those observed in viscoelastic phase separation. In the early stages, the minority phase domains form a percolating structure that shrinks with time, eventually leading to the formation of disconnected regions that are characterized by the presence of random interfaces as well as isolated droplets. The domains grow as L(t)similar to t(1/3) in the very late stages. Although dynamical scaling is violated in the area shrinking regime, it is restored at late times. However, the form of the scaling function is found to depend on the extent of dynamical asymmetry. [S1063-651X(99)12101-9]. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/38714/1/Phase_separation_in_a_simple_model.pdf Ahluwalia, Rajeev (1999) Phase separation in a simple model with dynamical asymmetry. In: Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, 59 (1). pp. 263-268. |
Publicador |
The American Physical Society |
Relação |
http://pre.aps.org/abstract/PRE/v59/i1/p263_1 http://eprints.iisc.ernet.in/38714/ |
Palavras-Chave | #Materials Research Centre |
Tipo |
Journal Article PeerReviewed |