TY  - JOUR
AU  - Chelakkot, R.
AU  - Winkler, R. G.
AU  - Gompper, G.
TI  - Migration of semiflexible polymers in microcapillary flow
JO  - epl
VL  - 91
SN  - 0295-5075
CY  - Les Ulis
PB  - EDP Sciences
M1  - PreJuSER-10786
SP  - 14001
PY  - 2010
N1  - We thank T. PFOHL (Basel) for stimulating discussions. The financial support by the Deutsche Forschungsgemeinschaft within the Priority Program "Nano- and Microfluidics" (SPP 1164) is gratefully acknowledged.
AB  - 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
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000282188800006
DO  - DOI:10.1209/0295-5075/91/14001
UR  - https://juser.fz-juelich.de/record/10786
ER  -