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@ARTICLE{deBeer:279889,
author = {de Beer, Sissi and Kenmoé, G. Djuidjé and Müser, Martin},
title = {{O}n the friction and adhesion hysteresis between polymer
brushes attached to curved surfaces: {R}ate and solvation
effects},
journal = {Friction},
volume = {3},
number = {2},
issn = {2223-7690},
address = {Berlin},
publisher = {Springer},
reportid = {FZJ-2015-07765},
pages = {148 - 160},
year = {2015},
abstract = {Computer simulations of friction between polymer brushes
are usually simplified compared to real systems in terms of
solvents and geometry. In most simulations, the solvent is
only implicit with infinite compressibility and zero
inertia. In addition, the model geometries are parallel
walls rather than curved or rough as in reality. In this
work, we study the effects of these approximations and more
generally the relevance of solvation on dissipation in
polymer-brush systems by comparing simulations based on
different solvation schemes. We find that the rate
dependence of the energy loss during the collision of
brush-bearing asperities can be different for explicit and
implicit solvent. Moreover, the non-Newtonian rate
dependences differ noticeably between normal and transverse
motion, i.e., between head-on and off-center asperity
collisions. Lastly, when the two opposing brushes are made
immiscible, the friction is dramatically reduced compared to
an undersaturated miscible polymer-brush system,
irrespective of the sliding direction.},
cin = {JSC},
ddc = {530},
cid = {I:(DE-Juel1)JSC-20090406},
pnm = {511 - Computational Science and Mathematical Methods
(POF3-511)},
pid = {G:(DE-HGF)POF3-511},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000209842000004},
doi = {10.1007/s40544-015-0078-2},
url = {https://juser.fz-juelich.de/record/279889},
}