Volume 138, Number 6, June 2022
|Number of page(s)||7|
|Section||Biological and soft matter physics|
|Published online||07 July 2022|
Effects of curvature on epithelial tissue —Coordinated rotational movement and other spatiotemporal arrangements
1 Institute of Scientific Computing, Technische Universität Dresden - 01062 Dresden, Germany
2 Centre for Systems Biology Dresden (CSBD) - Pfotenhauerstr. 108, 01307 Dresden, Germany
3 Cluster of Excellence - Physics of Life, Technische Universität Dresden - 01062 Dresden, Germany
(a) Axel.Voigt@tu-dresden.de (corresponding author)
Received: 7 February 2022
Accepted: 2 June 2022
Coordinated movements of epithelial tissue are linked with active matter processes. We here consider the influence of curvature on the spatiotemporal arrangements and the shapes of the cells. The cells are represented by a multiphase field model which is defined on the surface of a sphere. Besides the classical solid and liquid phases, which depend on the curvature of the sphere, on mechanical properties of the cells and the strength of activity, we identify a phase of global rotation. This rotation provides a coordinated cellular movement which can be linked to tissue morphogenesis. This investigation on a sphere is a first step to investigate the delicate interplay between topological constraints, geometric properties and collective motion. Besides the rotational state we also analyse positional defects, identify global nematic order and study the associated orientational defects.
© 2022 The author(s)
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