Polar fluctuations lead to extensile nematic behavior in confluent tissues
File(s)main_AK_Nov10.pdf (502.26 KB)
Accepted version
Author(s)
Killeen, Andrew
Bertrand, thibault
Lee, Chiu Fan
Type
Journal Article
Abstract
How can a collection of motile cells, each generating contractile nematic stresses in isolation, become an extensile nematic at the tissue-level? Understanding this seemingly contradictory experimental observation, which occurs irrespective of whether the tissue is in the liquid or solid states, is not only crucial to our understanding of diverse biological processes, but is also of fundamental interest to soft matter and many-body physics. Here, we resolve this cellular to tissue level disconnect in the small fluctuation regime by using analytical theories based on hydrodynamic descriptions of confluent tissues, in both liquid and solid states. Specifically, we show that a collection of microscopic constituents with no inherently nematic extensile forces can exhibit active extensile nematic behavior when subject to polar fluctuating forces. We further support our findings byperforming cell level simulations of minimal models of confluent tissues.
Date Issued
2022-02-15
Date Acceptance
2022-01-06
Citation
Physical Review Letters, 2022, 128, pp.1-6
ISSN
0031-9007
Publisher
American Physical Society
Start Page
1
End Page
6
Journal / Book Title
Physical Review Letters
Volume
128
Copyright Statement
© 2022 American Physical Society
Identifier
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.128.078001
Subjects
Science & Technology
Physical Sciences
Physics, Multidisciplinary
Physics
GIANT NUMBER FLUCTUATIONS
TOPOLOGICAL DEFECTS
STRESS
ORDER
MONOLAYERS
Hydrodynamics
Hydrodynamics
cond-mat.soft
cond-mat.soft
physics.bio-ph
General Physics
01 Mathematical Sciences
02 Physical Sciences
09 Engineering
Publication Status
Published
Date Publish Online
2022-02-15