2022 - T1 - WS1 - Tissue growth and movement

Collection 2022 - T1 - WS1 - Tissue growth and movement

Organisateur(s) Almeida, Luis ; Audebert, Chloé ; Lepoutre, Thomas ; Lorenzi, Tommaso ; Perthame, Benoît
Date(s) 10/01/2022 - 14/01/2022
URL associée https://indico.math.cnrs.fr/event/6529/
00:00:00 / 00:00:00
20 26

Morpho-elasticity of thin living structures

De Martine Ben Amar

Thin structures are ubiquitous in life mostly in botanic (flowers, leaves) but not only . In mammals or insects, they concern epithelia or the couple epithelium-extracellular matrix joined in a thin bilayer. The complexity of finite-elasticity with growth is then simplified, the main task being the adaptation of elasticity to the geometry of the system under study. I will present two different growing epithelia: first the cyst made by pluri-potent stem cells then the wing of the imaginal disc of genetically mutated drosophila. In the first case, the classical and simple model of a growing spherical shell reproduces perfectly the dynamics of proliferation of the stem cell assembly during more than 10 days with an extremely low level of stress. For the second case, I will show how the Von-Karman-Ciarlet modelling with growth explains the local collapse of the bilayer.

Informations sur la vidéo

Données de citation

  • DOI 10.57987/IHP.2022.T1.WS1.020
  • Citer cette vidéo Ben Amar, Martine (13/01/2022). Morpho-elasticity of thin living structures. IHP. Audiovisual resource. DOI: 10.57987/IHP.2022.T1.WS1.020
  • URL https://dx.doi.org/10.57987/IHP.2022.T1.WS1.020

Bibliographie

  • Joseph Ackermann, Philippe J.R. Cohen, Kevin Alessandri, Andrea Leonard, Pierre Nassoy, Jean-François Joanny, Martine Ben Amar / Morpho-elasticity of human pluripotent stem cell cysts. Preprint JMPS, 2021.

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