Biopolymer dynamics driven by helical flagella
Microbial flagellates typically inhabit complex suspensions of polymeric material which can impact the swimming speed of motile microbes, filter-feeding of sessile cells, and the generation of biofilms. There is currently a need to better understand how the fundamental dynamics of polymers near acti...
| Autores principales: | , , , |
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| Formato: | Journal article |
| Publicado: |
American Physical Society
2017
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| _version_ | 1826259052716359680 |
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| author | Balin, A Zöttl, A Yeomans, J Shendruk, T |
| author_facet | Balin, A Zöttl, A Yeomans, J Shendruk, T |
| author_sort | Balin, A |
| collection | OXFORD |
| description | Microbial flagellates typically inhabit complex suspensions of polymeric material which can impact the swimming speed of motile microbes, filter-feeding of sessile cells, and the generation of biofilms. There is currently a need to better understand how the fundamental dynamics of polymers near active cells or flagella impacts these various phenomena, in particular the hydrodynamic and steric influence of a rotating helical filament on suspended polymers. Our Stokesian dynamics simulations show that as a stationary rotating helix pumps fluid along its long axis, polymers migrate radially inwards while being elongated. We observe that the actuation of the helix tends to increase the probability of finding polymeric material within its pervaded volume. This accumulation of polymers within the vicinity of the helix is stronger for longer polymers. We further analyse the stochastic work performed by the helix on the polymers and show that this quantity is positive on average and increases with polymer contour length. |
| first_indexed | 2024-03-06T18:43:47Z |
| format | Journal article |
| id | oxford-uuid:0dccf73a-d521-4b34-a6f7-6c0bb5a26321 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T18:43:47Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:0dccf73a-d521-4b34-a6f7-6c0bb5a263212022-03-26T09:42:25ZBiopolymer dynamics driven by helical flagellaJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0dccf73a-d521-4b34-a6f7-6c0bb5a26321Symplectic Elements at OxfordAmerican Physical Society2017Balin, AZöttl, AYeomans, JShendruk, TMicrobial flagellates typically inhabit complex suspensions of polymeric material which can impact the swimming speed of motile microbes, filter-feeding of sessile cells, and the generation of biofilms. There is currently a need to better understand how the fundamental dynamics of polymers near active cells or flagella impacts these various phenomena, in particular the hydrodynamic and steric influence of a rotating helical filament on suspended polymers. Our Stokesian dynamics simulations show that as a stationary rotating helix pumps fluid along its long axis, polymers migrate radially inwards while being elongated. We observe that the actuation of the helix tends to increase the probability of finding polymeric material within its pervaded volume. This accumulation of polymers within the vicinity of the helix is stronger for longer polymers. We further analyse the stochastic work performed by the helix on the polymers and show that this quantity is positive on average and increases with polymer contour length. |
| spellingShingle | Balin, A Zöttl, A Yeomans, J Shendruk, T Biopolymer dynamics driven by helical flagella |
| title | Biopolymer dynamics driven by helical flagella |
| title_full | Biopolymer dynamics driven by helical flagella |
| title_fullStr | Biopolymer dynamics driven by helical flagella |
| title_full_unstemmed | Biopolymer dynamics driven by helical flagella |
| title_short | Biopolymer dynamics driven by helical flagella |
| title_sort | biopolymer dynamics driven by helical flagella |
| work_keys_str_mv | AT balina biopolymerdynamicsdrivenbyhelicalflagella AT zottla biopolymerdynamicsdrivenbyhelicalflagella AT yeomansj biopolymerdynamicsdrivenbyhelicalflagella AT shendrukt biopolymerdynamicsdrivenbyhelicalflagella |