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Scaling and hydrodynamic effects in lamellar ordering | | Aiguo Xu
; G. Gonnella
; A. Lamura
; G. Amati
; F. Massaioli
; | | Date: |
8 Apr 2004 | | Subject: | Soft Condensed Matter; Statistical Mechanics | cond-mat.soft cond-mat.stat-mech | | Abstract: | We study the kinetics of domain growth of fluid mixtures quenched from a disordered to a lamellar phase. At low viscosities, in two dimensions, when hydrodynamic modes become important, dynamical scaling is verified in the form $C(vec k, t) sim L^{alpha} f[(k-k_M)L]$ where $C$ is the structure factor with maximum at $k_M$ and $L$ is a typical length changing from power law to logarithmic growth at late times. The presence of extended defects can explain the behavior of $L$. Three-dimensional simulations confirm that diffuse grain boundaries inhibit complete ordering of lamellae. Applied shear flow alleviates frustration and gives power-law growth at all times. | | Source: | arXiv, cond-mat/0404205 | | Services: | Forum | Review | PDF | Favorites | |
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