Diffusion-Controlled, Self-Organized Growth of Symmetric Wrinkling Patterns

被引：179

作者：

Chung, Jun Young ^{[1
]}

Nolte, Adam J. ^{[1
]}

Stafford, Christopher M. ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Div Polymers, Gaithersburg, MD 20899 USA

来源：

ADVANCED MATERIALS | 2009年 / 21卷 / 13期

关键词：

THIN-FILMS; ELASTOMERIC POLYMER; ORDERED STRUCTURES; SURFACE; MECHANICS; SOLVENT; SKINS;

D O I：

10.1002/adma.200803209

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Symmetric instability patterns in the UV-ozone crosslinked surface of a polystyrene film grow radially outward from local defect sites in the presence of solvent vapor. The diffusion kinetics of the solvent governs the pattern morphology by establishing stress fields that favor the orientation of wrinkles in a dendritic-like spoke pattern (left) or in a target pattern consisting of concentric rings (right).

引用

页码：1358 / 1362

页数：5

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