Abstract
The non-equilibrium structural and dynamical properties of a flexible
polymer pinned to a reflecting wall and subject to oscillatory linear flow
are studied by numerical simulations.
Polymer is confined in two dimensions and is modeled as a bead-spring chain
while the interaction with the fluid is described by the Brownian
multiparticle collision dynamics.
At low strain the polymer is stretched along the flow direction. When
increasing strain, chains are completely elongated and compressed against
the wall when the flow is reverted. The conformations are
analyzed and compared to the case of stiffer polymers [1].
The dynamics is investigated by looking at the motion of the center of mass
which shows a frequency doubling along the shear direction.
[1] A. Lamura, R. G. Winkler, and G. Gompper,
Wall-Anchored Semiflexible Polymer under Large Amplitude
Oscillatory Shear, J. Chem. Phys. 154, 224901 (2021).
Anno
2023
Autori IAC
Tipo pubblicazione
Altri Autori
A. Lamura