Journal
SOFT MATTER
Volume 6, Issue 22, Pages 5751-5756Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0sm00394h
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Funding
- National Fund for Scientific Research (F.R.S.-FNRS)
- Walloon Region (REMANOS project)
- ESF (FANAS)
- NIH [R01HL079126-01A2]
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This paper reports a simple and flexible method for generating hierarchical patterns from wrinkling instability. Complex features with gradually changing topographies are generated by using the spontaneous wrinkling of a rigid membrane (titanium) on a soft foundation (polystyrene) compressed via the diffusion of a solvent. We show that the morphology of these unreported wrinkled patterns is directly related to the rheological properties of the polymer layer and the geometry of the diffusion front. Based on these ingredients, we rationalize the mechanism for the formation of hierarchical wrinkling patterns and quantify our experimental findings with a simple scaling theory. Finally, we illustrate the relevance of our structuration method by studying the mechanosensitivity of fibroblasts.
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