ORDER-INDUCED PERIOD-DOUBLING DURING SURFACE-DIRECTED SPINODAL DECOMPOSITION

被引：27

作者：

KRAUSCH, G ^{[1
]}

MLYNEK, J ^{[1
]}

STRAUB, W ^{[1
]}

BRENN, R ^{[1
]}

MARKO, JF ^{[1
]}

机构：

[1] CORNELL UNIV,ATOM & SOLID STATE PHYS LAB,ITHACA,NY 14853

来源：

EUROPHYSICS LETTERS | 1994年 / 28卷 / 05期

关键词：

D O I：

10.1209/0295-5075/28/5/005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present first experimental evidence for period doubling as an alternative mode of coarsening during surface-directed spinodal decomposition in a binary mixture. The system under consideration is a symmetric blend of deuterated polystyrene (dPS) and partially brominated polystyrene (PBr(x)S). We compare the surface domain coarsening of a thin film of a critical mixture with that of a multilayered structure of near-binodal compositions. While the former is found to coarsen monotonically via diffusion, leading to self-similar composition vs. depth profiles, the latter grows by dissolution of one of the layers feeding the adjacent domains of the respective phase. The results compare well with cell-dynamical simulations.

引用

页码：323 / 328

页数：6

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