Dynamics of Active Polar Ring Polymers
arXiv:2206.10170 · doi:10.1103/PhysRevE.105.L062501
Abstract
The conformational and dynamical properties of isolated semiflexible active polar ring polymers are investigated analytically. A ring is modeled as continuous Gaussian polymer exposed to tangential active forces. The analytical solution of the linear non-Hermitian equation of motion in terms of an eigenfunction expansion shows that ring conformations are independent of activity. In contrast, activity strongly affects the internal ring dynamics and yields characteristic time regimes, which are absent in passive rings. On intermediate time scales, flexible rings show an activity-enhanced diffusive regime, while semiflexible rings exhibit ballistic motion. Moreover, a second active time regime emerges on longer time scales, where rings display a snake-like motion, which is reminiscent to a tank-treading rotational dynamics in shear flow, dominated by the mode with the longest relaxation time.
3 figures; Supplemental Material is attached
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Cited by in corpus (5)
- Tangentially Driven Active Polar Linear Polymers -- An Analytical Study
- Active Dynamics of Linear Chains and Rings in Porous Media
- Detailed dynamics of discrete Gaussian semiflexible chains with arbitrary stiffness along the contour
- Excluded volume effects on tangentially driven active ring polymers
- Two-dimensional active polar semiflexible polymer under shear flow