The dynamics of a packed cell tissue

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• Marina Ferreira (Imperial College London)
• Monday 18 September 2017, 14:30-14:50
• Seminar Room 1, Newton Institute.

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GFSW01 - Form and deformation in solid and fluid mechanics

In a packed tissue neighboring cells exert high pressure on each other at all times. Such mechanical interactions are believed to play an important role on the dynamics of the tissue. However, their contribution to the tissue shape is not yet fully understood. In this talk I will first present a framework to model this type of systems based on a geometric representation of individual cells. The cells interact with each other aiming at minimizing a local potential energy, subjected to non-overlapping constraints. Mathematically, the problem is formulated as a non-convex minimization problem, which will be tackled with the recently proposed damped Arrow-Hurwicz algorithm. I will then apply this framework to the study of a pseudo-stratified epithelial tissue. Finally, I will present some numerical results showing how the tissue may be deformed when simple defects on individual cells are introduced.

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

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