Abstract:
:We investigate the emergence of global alignment in colonies of dividing rod-shaped cells under confinement. Using molecular dynamics simulations and continuous modeling, we demonstrate that geometrical anisotropies in the confining environment give rise to an imbalance in the normal stresses, which, in turn, drives a collective rearrangement of the cells. This behavior crucially relies on the colony's solid-like mechanical response at short time scales and can be recovered within the framework of active hydrodynamics upon modeling bacterial colonies as growing viscoelastic gels characterized by Maxwell-like stress relaxation.
journal_name
Sci Advjournal_title
Science advancesauthors
You Z,Pearce DJG,Giomi Ldoi
10.1126/sciadv.abc8685subject
Has Abstractpub_date
2021-01-22 00:00:00issue
4issn
2375-2548pii
7/4/eabc8685journal_volume
7pub_type
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