Pattern formation and shape changes in self-oscillating polymer gels |
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| Authors: | Yashin Victor V Balazs Anna C |
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| Institution: | Chemical Engineering Department, University of Pittsburgh, Pittsburgh, PA 15261, USA. |
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| Abstract: | 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. |
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