| Issue |
Europhys. Lett.
Volume 71, Number 4, August 2005
|
|
|---|---|---|
| Page(s) | 651 - 657 | |
| Section | Condensed matter: structural, mechanical and thermal properties | |
| DOI | https://doi.org/10.1209/epl/i2005-10130-3 | |
| Published online | 20 July 2005 | |
Scaling and hydrodynamic effects in lamellar ordering
1
Dipartimento di Fisica, Università di Bari and Center of Innovative Technologies for Signal Detection and Processing (TIRES) and INFN, Sezione di Bari and INFM via Amendola 173, 70126 Bari, Italy
2
Istituto Applicazioni Calcolo, CNR, Sezione di Bari via Amendola 122/D, 70126 Bari, Italy
3
CASPUR - via dei Tizii 6/b, 00185 Roma, Italy
Received:
7
February
2005
Accepted:
23
June
2005
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
, where C is the
structure factor with maximum at kM and L is a typical
length with 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.
PACS: 64.75.+g – Solubility, segregation, and mixing; phase separation / 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 47.20.Hw – Morphological instability; phase changes
© EDP Sciences, 2005
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