English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Activity induces traveling waves, vortices and spatiotemporal chaos in a model actomyosin layer

MPS-Authors
/persons/resource/persons189204

Ramaswamy,  Rajesh
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

/persons/resource/persons145744

Jülicher,  Frank
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

External Resource
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Ramaswamy, R., & Jülicher, F. (2016). Activity induces traveling waves, vortices and spatiotemporal chaos in a model actomyosin layer. Scientific Reports, 6: 20838. doi:10.1038/srep20838.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002A-09B8-C
Abstract
Inspired by the actomyosin cortex in biological cells, we investigate the spatiotemporal dynamics of a model describing a contractile active polar fluid sandwiched between two external media. The external media impose frictional forces at the interface with the active fluid. The fluid is driven by a spatially-homogeneous activity measuring the strength of the active stress that is generated by processes consuming a chemical fuel. We observe that as the activity is increased over two orders of magnitude the active polar fluid first shows spontaneous flow transition followed by transition to oscillatory dynamics with traveling waves and traveling vortices in the flow field. In the flow-tumbling regime, the active polar fluid also shows transition to spatiotemporal chaos at sufficiently large activities. These results demonstrate that level of activity alone can be used to tune the operating point of actomyosin layers with qualitatively different spatiotemporal dynamics.