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@ARTICLE{Li:890642,
author = {Li, Run and Gompper, Gerhard and Ripoll, Marisol},
title = {{T}umbling and {V}orticity {D}rift of {F}lexible
{H}elicoidal {P}olymers in {S}hear {F}low},
journal = {Anatomical science international},
volume = {54},
number = {2},
issn = {0024-9297},
address = {Tokyo},
publisher = {Springer814959},
reportid = {FZJ-2021-01092},
pages = {812-823},
year = {2021},
note = {Kein Post-print verfügbar},
abstract = {Helicoidal structures are frequent among organisms and
macromolecules with biological relevance, whose motion and
rheological properties are significantly influenced by the
chiral symmetry. The role of filament flexibility and
hydrodynamic interactions in the behavior of helix-like
polymers in shear flow is investigated here with simulation
and analytical approaches. Stability regimes can be
identified in dependence of polymer flexibilities and shear
rates that result in configurations without helical
symmetry. In the stable regime, elongated helices tumble
following Jeffery-type orbits, with frequencies
corresponding to an effective aspect ratio, which depends on
geometry, flexibility, and shear rate. Drift in the
vorticity direction can be quantified in the simulations
with a velocity that depends both on the helix intrinsic
geometrical parameters and on its flexibility. Using
resistive force theory, we obtain an expression for the
vorticity drift velocity directly as a function of the helix
geometry and shear rate that quantitatively describes the
simulation results. These results are expected to be useful
in the development and optimization of separation techniques
of racemic mixtures.},
cin = {IBI-5},
ddc = {610},
cid = {I:(DE-Juel1)IBI-5-20200312},
pnm = {524 - Molecular and Cellular Information Processing
(POF4-524)},
pid = {G:(DE-HGF)POF4-524},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000613936700027},
doi = {10.1021/acs.macromol.0c01651},
url = {https://juser.fz-juelich.de/record/890642},
}