Active polar ring polymer in shear flow—An analytical study

The Journal of Chemical Physics, Год журнала: 2024, Номер 161(6)

Опубликована: Авг. 8, 2024

We theoretically study the conformational and dynamical properties of semiflexible active polar ring polymers under linear shear flow. A is described as a continuous Gaussian polymer with tangential force constant density along its contour. The but non-Hermitian equation motion solved using an eigenfunction expansion, which yields activity-independent, shear-rate-dependent, relaxation times activity-dependent frequencies. As consequence, ring’s stationary-state are independent activity, conformations rheological equal to those passive shear. presence characteristic time scales by frequencies give rise particular behavior. tank-treading-like emerges for long high activities, specifically stiff rings. In case very flexible polymers, behavior dominates over activity contributions suppressing tank-treading. Shear strongly affects crossover from tank-treading relaxation-dominated dynamics, exhibits tumbling at rates. This reflected in frequency, displays two shear-rate dependent regimes, plateau low rates followed power-law regime increasing frequency

Язык: Английский

Activity-enhanced shear thinning of flexible linear polar polymers

Physical review. E, Год журнала: 2025, Номер 111(5)

Опубликована: Май 22, 2025

Язык: Английский