Wrinkling of simple epithelial tissues

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• Primoz Ziherl (Univerza v Ljubljani)
• Tuesday 05 September 2023, 15:40-16:20
• Seminar Room 1, Newton Institute.

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SPLW02 - Active mechanics, from single cells to cell layers, tissues and development

We investigate the elasticity of an unsupported epithelial monolayer and we discover that unlike a thin solid plate, which wrinkles if geometrically incompatible with the underlying substrate, the epithelium may do so even in the absence of the substrate. From a cell-based model, we derive an exact elasticity theory and discover wrinkling driven by the differential apico-basal surface tension. Our theory is mapped onto that for supported plates by introducing a phantom substrate whose stiffness is finite beyond a critical differential tension. This suggests a new mechanism for an autonomous control of tissues over the length scale of their surface patterns.

This talk is part of the Isaac Newton Institute Seminar Series series.

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