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@INPROCEEDINGS{Rmer:154034,
author = {Römer, Frank},
title = {{S}emi-{F}lexible dense polymer brushes in flow -
simulation $\&$ theory},
reportid = {FZJ-2014-03448},
year = {2014},
abstract = {The response of dense brushes of semi-flexible polymers to
flow is of great interest in both technological and
biological contexts. Examples include the glycocalyx on the
endothelial surface layer in blood vessels [S. Weinbaum et
al., Annu. Rev. Biomed. Eng. 9, 121–167, 2007] and
mucus-like layers in lungs or the interior of nuclear
pores.We employ smoothed dissipative particle dynamics
(SDPD) [P. Espanol, M. Revenga, Phys. Rev. E 67, 026705,
2003] simulations to study semi-flexible polymer brushes for
a wide range of conditions including grafting density,
polymer elasticity, and shear stress due to flow. Our
simulation results are in good agreement with previous
studies [Y.W. Kim et al., Macromolecules 42, 3650–3655,
2009], which focused on brushes with low grafting densities.
We also propose a theoretical model which describes the
deformation of dense semi-flexible polymer brushes in shear
flow for a wide parameter range. The model allows us to
predict effective deformation (height), inner density
profile and hydrodynamic penetration depth (solvent velocity
profile). Therefore, it is suitable to predict the effect of
grafted surfaces on the flow profile in a slit or tube.},
month = {Mar},
date = {2014-03-30},
organization = {DPG Spring Meeting, Dresden (Germany),
30 Mar 2014 - 4 Apr 2014},
subtyp = {Invited},
cin = {IAS-2 / ICS-2},
cid = {I:(DE-Juel1)IAS-2-20090406 / I:(DE-Juel1)ICS-2-20110106},
pnm = {451 - Soft Matter Composites (POF2-451)},
pid = {G:(DE-HGF)POF2-451},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/154034},
}