%0 Journal Article
%A Chelakkot, R.
%A Winkler, R. G.
%A Gompper, G.
%T Migration of semiflexible polymers in microcapillary flow
%J epl
%V 91
%@ 0295-5075
%C Les Ulis
%I EDP Sciences
%M PreJuSER-10786
%P 14001
%D 2010
%Z 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.
%X 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
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000282188800006
%R 10.1209/0295-5075/91/14001
%U https://juser.fz-juelich.de/record/10786