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SUMMARY:Wrinkling of simple epithelial tissues - Primoz Ziherl (Univerza v
  Ljubljani)
DTSTART:20230905T144000Z
DTEND:20230905T152000Z
UID:TALK203830@talks.cam.ac.uk
DESCRIPTION:We investigate the elasticity of an unsupported epithelial mon
 olayer 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 f
 or supported plates by introducing a phantom substrate whose stiffness is 
 finite beyond a critical differential tension. This suggests a new mechani
 sm for an autonomous control of tissues over the length scale of their sur
 face patterns.
LOCATION:Seminar Room 1\, Newton Institute
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