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@ARTICLE{Singh:845319,
author = {Singh, Sunil P. and Gompper, Gerhard and Winkler, Roland
G.},
title = {{S}teady state sedimentation of ultrasoft colloids},
journal = {The journal of chemical physics},
volume = {148},
number = {8},
issn = {1089-7690},
address = {Melville, NY},
publisher = {American Institute of Physics},
reportid = {FZJ-2018-02597},
pages = {084901},
year = {2018},
abstract = {The structural and dynamical properties of ultra-soft
colloids—star polymers—exposed to a uniform external
force field are analyzed by applying the multiparticle
collision dynamics technique, a hybrid coarse-grain
mesoscale simulation approach, which captures thermal
fluctuations and long-range hydrodynamic interactions. In
the weak-field limit, the structure of the star polymer is
nearly unchanged; however, in an intermediate regime, the
radius of gyration decreases, in particular transverse to
the sedimentation direction. In the limit of a strong field,
the radius of gyration increases with field strength.
Correspondingly, the sedimentation coefficient increases
with increasing field strength, passes through a maximum,
and decreases again at high field strengths. The maximum
value depends on the functionality of the star polymer. High
field strengths lead to symmetry breaking with trailing,
strongly stretched polymer arms and a compact star-polymer
body. In the weak-field-linear response regime, the
sedimentation coefficient follows the scaling relation of a
star polymer in terms of functionality and arm length},
cin = {IAS-2 / ICS-2},
ddc = {540},
cid = {I:(DE-Juel1)IAS-2-20090406 / I:(DE-Juel1)ICS-2-20110106},
pnm = {551 - Functional Macromolecules and Complexes (POF3-551)},
pid = {G:(DE-HGF)POF3-551},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29495770},
UT = {WOS:000426582700035},
doi = {10.1063/1.5001886},
url = {https://juser.fz-juelich.de/record/845319},
}