Instabilities, motion and deformation of active fluid droplets
We consider two minimal models of active fluid droplets that exhibit complex dynamics including steady motion, deformation, rotation and oscillating motion. First we consider a droplet with a concentration of active contractile matter adsorbed to its boundary. We analytically predict activity driven...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2016-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/18/12/123016 |
| _version_ | 1797750926919860224 |
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| author | Carl A Whitfield Rhoda J Hawkins |
| author_facet | Carl A Whitfield Rhoda J Hawkins |
| author_sort | Carl A Whitfield |
| collection | DOAJ |
| description | We consider two minimal models of active fluid droplets that exhibit complex dynamics including steady motion, deformation, rotation and oscillating motion. First we consider a droplet with a concentration of active contractile matter adsorbed to its boundary. We analytically predict activity driven instabilities in the concentration profile, and compare them to the dynamics we find from simulations. Secondly, we consider a droplet of active polar fluid of constant concentration. In this system we predict, motion and deformation of the droplets in certain activity ranges due to instabilities in the polarisation field. Both these systems show spontaneous transitions to motility and deformation which resemble dynamics of the cell cytoskeleton in animal cells. |
| first_indexed | 2024-03-12T16:39:56Z |
| format | Article |
| id | doaj.art-d6749af8e1cb423b908e977b25d07dc7 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:39:56Z |
| publishDate | 2016-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-d6749af8e1cb423b908e977b25d07dc72023-08-08T14:35:30ZengIOP PublishingNew Journal of Physics1367-26302016-01-01181212301610.1088/1367-2630/18/12/123016Instabilities, motion and deformation of active fluid dropletsCarl A Whitfield0Rhoda J Hawkins1Department of Physics and Astronomy, University of Sheffield , Sheffield, S3 7RH, UKDepartment of Physics and Astronomy, University of Sheffield , Sheffield, S3 7RH, UKWe consider two minimal models of active fluid droplets that exhibit complex dynamics including steady motion, deformation, rotation and oscillating motion. First we consider a droplet with a concentration of active contractile matter adsorbed to its boundary. We analytically predict activity driven instabilities in the concentration profile, and compare them to the dynamics we find from simulations. Secondly, we consider a droplet of active polar fluid of constant concentration. In this system we predict, motion and deformation of the droplets in certain activity ranges due to instabilities in the polarisation field. Both these systems show spontaneous transitions to motility and deformation which resemble dynamics of the cell cytoskeleton in animal cells.https://doi.org/10.1088/1367-2630/18/12/123016active fluidsdropletscell motilityinstabilitiesactive matterspontaneous motion |
| spellingShingle | Carl A Whitfield Rhoda J Hawkins Instabilities, motion and deformation of active fluid droplets New Journal of Physics active fluids droplets cell motility instabilities active matter spontaneous motion |
| title | Instabilities, motion and deformation of active fluid droplets |
| title_full | Instabilities, motion and deformation of active fluid droplets |
| title_fullStr | Instabilities, motion and deformation of active fluid droplets |
| title_full_unstemmed | Instabilities, motion and deformation of active fluid droplets |
| title_short | Instabilities, motion and deformation of active fluid droplets |
| title_sort | instabilities motion and deformation of active fluid droplets |
| topic | active fluids droplets cell motility instabilities active matter spontaneous motion |
| url | https://doi.org/10.1088/1367-2630/18/12/123016 |
| work_keys_str_mv | AT carlawhitfield instabilitiesmotionanddeformationofactivefluiddroplets AT rhodajhawkins instabilitiesmotionanddeformationofactivefluiddroplets |