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Active Nematic Flows over Curved Surfaces.
- Source :
-
Physical review letters [Phys Rev Lett] 2022 Sep 09; Vol. 129 (11), pp. 118001. - Publication Year :
- 2022
-
Abstract
- Cell monolayers are a central model system in the study of tissue biophysics. In vivo, epithelial tissues are curved on the scale of microns, and the curvature's role in the onset of spontaneous tissue flows is still not well understood. Here, we present a hydrodynamic theory for an apical-basal asymmetric active nematic gel on a curved strip. We show that surface curvature qualitatively changes monolayer motion compared with flat space: the resulting flows can be thresholdless, and the transition to motion may change from continuous to discontinuous. Surface curvature, friction, and active tractions are all shown to control the flow pattern selected, from simple shear to vortex chains.
- Subjects :
- Biophysics methods
Friction
Motion
Hydrodynamics
Models, Biological
Subjects
Details
- Language :
- English
- ISSN :
- 1079-7114
- Volume :
- 129
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 36154433
- Full Text :
- https://doi.org/10.1103/PhysRevLett.129.118001