This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1209/0295-5075/91/14001 in citations.
Migration of semiflexible polymers in microcapillary flow
Migration of semiflexible polymers in microcapillary flow
The non-equilibrium structural and dynamical properties of a semiflexible polymer confined in a cylindrical microchannel and exposed to a Poiseuille flow is studied by mesoscale hydrodynamic simulations. For a polymer with a length half of its persistence length, large variations in orientation and...
| Personal Name(s): | Chelakkot, R. |
|---|---|
| Winkler, R. G. / Gompper, G. | |
| Contributing Institute: |
Theorie der Weichen Materie und Biophysik; IFF-2 JARA - HPC; JARA-HPC Theorie der Weichen Materie und Biophysik; IAS-2 |
| Published in: | epl, 91 (2010) S. 14001 |
| Imprint: |
Les Ulis
EDP Sciences
2010
|
| Physical Description: |
14001 |
| DOI: |
10.1209/0295-5075/91/14001 |
| Document Type: |
Journal Article |
| Research Program: |
BioSoft: Makromolekulare Systeme und biologische Informationsverarbeitung |
| Series Title: |
Europhysics Letters
91 |
| Subject (ZB): | |
| Publikationsportal JuSER |
|
The non-equilibrium structural and dynamical properties of a semiflexible polymer confined in a cylindrical microchannel and exposed to a Poiseuille flow is studied by mesoscale hydrodynamic simulations. For a polymer with a length half of its persistence length, large variations in orientation and conformations are found as a function of radial distance and flow strength. In particular, the polymer exhibits U-shaped conformations near the channel center. Hydrodynamic interactions lead to strong cross-streamline migration. Outward migration is governed by the polymer orientation and the corresponding anisotropy in its diffusivity. Strong tumbling motion is observed, with a tumbling time which exhibits the same dependence on Peclet number as a polymer in shear flow. Copyright (C) EPLA, 2010 |