Discrete elastic model for stretching-induced flagellar polymorphs
| dc.creator | Wada, Hirofumi | |
| dc.creator | Netz, Roland R. | |
| dc.date | 2008-04-06 | |
| dc.date.accessioned | 2026-07-07T09:30:44Z | |
| dc.date.available | 2026-07-07T09:30:44Z | |
| dc.description | Force-induced reversible transformations between coiled and normal polymorphs of bacterial flagella have been observed in recent optical-tweezer experiment. We introduce a discrete elastic rod model with two competing helical states governed by a fluctuating spin-like variable that represents the underlying conformational states of flagellin monomers. Using hybrid Brownian dynamics Monte-Carlo simulations, we show that a helix undergoes shape transitions dominated by domain wall nucleation and motion in response to externally applied uniaxial tension. A scaling argument for the critical force is presented in good agreement with experimental and simulation results. Stretching rate-dependent elasticity including a buckling instability are found, also consistent with the experiment. | |
| dc.identifier | https://arxiv.org/abs/0804.0893 | |
| dc.identifier | http://arxiv.org/abs/0804.0893 | |
| dc.identifier | EPL 82, 28001 (2008) | |
| dc.identifier | doi:10.1209/0295-5075/82/28001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/158212 | |
| dc.subject | Soft Condensed Matter | |
| dc.title | Discrete elastic model for stretching-induced flagellar polymorphs | |
| dc.type | text |