Pattern formation and shape changes in self-oscillating polymer gels

被引：205

作者：

Yashin, Victor V. ^{[1
]}

Balazs, Anna C. ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Chem Engn, Pittsburgh, PA 15261 USA

来源：

SCIENCE | 2006年 / 314卷 / 5800期

关键词：

D O I：

10.1126/science.1132412

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We developed an efficient model for responsive gels that captures large-scale, two-dimensional (2D) deformations and chemical reactions within a swollen polymer network. The 2D calculations allowed us to probe not only volume changes but also changes in sample shape. By focusing on gels undergoing the oscillatory Belousov-Zhabotinsky reaction, we observed traveling waves of local swelling that form a rich variety of dynamic patterns and give rise to distinctive oscillations in the gel's shape. The observed patterns depend critically on the gel's dimensions. The approach provides a useful computational tool for probing the dynamics of chemomechanical processes and uncovering morphological transformations in responsive gels.

引用

页码：798 / 801

页数：4

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