Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session C13: Physics of Biological Active Matter I: Cell Colonies
3:00 PM–5:48 PM,
Monday, March 15, 2021
Sponsoring
Units:
DBIO DPOLY DSOFT
Chair: Ricard Alert, Princeton University; Joshua Shaevitz, Princeton University
Abstract: C13.00004 : Boundary conditions determine emergence and dynamics of density patterns in microbial suspensions
4:00 PM–4:12 PM
Live
Presenter:
Nicole Drewes
(Max Planck Institute for Dynamics and Self-Organization, 37077 Goettingen, Germany)
Authors:
Nicole Drewes
(Max Planck Institute for Dynamics and Self-Organization, 37077 Goettingen, Germany)
Alexandros Fragkopoulos
(Max Planck Institute for Dynamics and Self-Organization, 37077 Goettingen, Germany)
Oliver Baeumchen
(Max Planck Institute for Dynamics and Self-Organization, 37077 Goettingen, Germany)
Here, we explore this phenomenon in 3D and study the emergence of a rich variety of patterns, including dense rings in cylindrical chambers. We also observe the formation of bioconvection patterns even for shallow suspensions with depths below the reported threshold value. This work investigates the interplay of pattern formation and bioconvection for different chamber geometries, light intensities and boundary conditions determining the oxygen concentration field within the compartments.
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