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@ARTICLE{Lamura:862433,
author = {Lamura, Antonio and Winkler, Roland G.},
title = {{T}ethered {S}emiflexible {P}olymer under {L}arge
{A}mplitude {O}scillatory {S}hear},
journal = {Polymers},
volume = {11},
number = {4},
issn = {2073-4360},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2019-02749},
pages = {737},
year = {2019},
abstract = {The properties of a semiflexible polymer with fixed ends
exposed to oscillatory shear flow are investigated by
simulations. The two-dimensionally confined polymer is
modeled as a linear bead-spring chain, and the interaction
with the fluid is described by the Brownian multiparticle
collision dynamics approach. For small shear rates, the
tethering of the ends leads to a more-or-less linear
oscillatory response. However, at high shear rates, we found
a strongly nonlinear reaction, with a polymer (partially)
wrapped around the fixation points. This leads to an overall
shrinkage of the polymer. Dynamically, the location
probability of the polymer center-of-mass position is
largest on a spatial curve resembling a limaçon, although
with an inhomogeneous distribution. We found shear-induced
modifications of the normal-mode correlation functions, with
a frequency doubling at high shear rates. Interestingly, an
even-odd asymmetry for the Cartesian components of the
correlation functions appears, with rather similar spectra
for odd x- and even y-modes and vice versa. Overall, our
simulations yielded an intriguing nonlinear behavior of
tethered semiflexible polymers under oscillatory shear flow},
cin = {IAS-2},
ddc = {540},
cid = {I:(DE-Juel1)IAS-2-20090406},
pnm = {553 - Physical Basis of Diseases (POF3-553)},
pid = {G:(DE-HGF)POF3-553},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:31018564},
UT = {WOS:000467312900166},
doi = {10.3390/polym11040737},
url = {https://juser.fz-juelich.de/record/862433},
}