Excitable Patterns in Active Nematics
| Title: | Excitable Patterns in Active Nematics |
| Author: |
Giomi, Luca; Mahadevan, Lakshminarayanan; Chakraborty, Bulbul; Hagan, Michael
Note: Order does not necessarily reflect citation order of authors. |
| Citation: | Giomi, Luca, Lakshminarayanan Mahadevan, Bulbul Chakraborty, and Michael F. Hagan. 2011. Excitable Patterns in Active Nematics. Physical Review Letters 106(21): 218101. |
| Full Text & Related Files: |
Giomi_Excitable Patterns in Active Nematics.pdf (1.279Mb; PDF) 
|
| Abstract: | We analyze a model of mutually propelled filaments suspended in a two-dimensional solvent. The system undergoes a mean-field isotropic-nematic transition for large enough filament concentrations, and the nematic order parameter is allowed to vary in space and time. We show that the interplay between nonuniform nematic order, activity, and flow results in spatially modulated relaxation oscillations, similar to those seen in excitable media. In this regime the dynamics consists of nearly stationary periods separated by ‘‘bursts’’ of activity in which the system is elastically distorted and solvent is pumped throughout. At even higher activity, the dynamics becomes chaotic. |
| Published Version: | doi:10.1103/PhysRevLett.106.218101 |
| Other Sources: |
http://www.seas.harvard.edu/softmat/downloads/2011-08.pdf
http://arxiv.org/abs/1011.3841 http://www.brandeis.edu/departments/physics/pdfs/giomi.pdf |
| Terms of Use: | This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP |
| Citable link to this page: | http://nrs.harvard.edu/urn-3:HUL.InstRepos:5128482 |
This item appears in the following Collection(s)
-
FAS Scholarly Articles [5171]
Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University
Contact administrator regarding this item (to report mistakes or request changes)
