Journal
PHYSICAL REVIEW E
Volume 86, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.86.040902
Keywords
-
Categories
Funding
- NSF [DMS-0652775, DMS-0652795]
- DOE [DEFG02-00ER25053]
- ERC Advanced Investigator Grant [247333]
- Division Of Mathematical Sciences
- Direct For Mathematical & Physical Scien [920930] Funding Source: National Science Foundation
- European Research Council (ERC) [247333] Funding Source: European Research Council (ERC)
Ask authors/readers for more resources
In microswimmer suspensions locomotion necessarily generates fluid motion, and it is known that such flows can lead to collective behavior from unbiased swimming. We examine the complementary problem of how chemotaxis is affected by self-generated flows. A kinetic theory coupling run-and-tumble chemotaxis to the flows of collective swimming shows separate branches of chemotactic and hydrodynamic instabilities for isotropic suspensions, the first driving aggregation, the second producing increased orientational order in suspensions of pushers and maximal disorder in suspensions of pullers. Nonlinear simulations show that hydrodynamic interactions can limit and modify chemotactically driven aggregation dynamics. In puller suspensions the dynamics form aggregates that are mutually repelling due to the nontrivial flows. In pusher suspensions chemotactic aggregation can lead to destabilizing flows that fragment the regions of aggregation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available