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@ARTICLE{McWhirter:4229,
author = {McWhirter, J. L. and Noguchi, H. and Gompper, G.},
title = {{F}low-induced clustering and alignment of vesicles and red
blood cells in microcapillaries},
journal = {Proceedings of the National Academy of Sciences of the
United States of America},
volume = {106},
issn = {0027-8424},
address = {Washington, DC},
publisher = {Academy},
reportid = {PreJuSER-4229},
pages = {6039 - 6043},
year = {2009},
note = {Stimulating discussions with U. B. Kaupp are gratefully
acknowledged. This work was supported by the Deutsche
Forschungsgemeinschaft through the priority program SPP
1164, "Nano-and Microfluidics.''},
abstract = {The recent development of microfluidic devices allows the
investigation and manipulation of individual liquid
microdroplets, capsules, and cells. The collective behavior
of several red blood cells (RBCs) or microcapsules in narrow
capillaries determines their flow-induced morphology,
arrangement, and effective viscosity. Of fundamental
interest here is the relation between the flow behavior and
the elasticity and deformability of these objects, their
long-range hydrodynamic interactions in microchannels, and
thermal membrane undulations. We study these mechanisms in
an in silico model, which combines a particle-based
mesoscale simulation technique for the fluid hydrodynamics
with a triangulated-membrane model. The 2 essential control
parameters are the volume fraction of RBCs (the tube
hematocrit, H(T)), and the flow velocity. Our simulations
show that already at very low H(T), the deformability of
RBCs implies a flow-induced cluster formation above a
threshold flow velocity. At higher H(T) values, we predict 3
distinct phases: one consisting of disordered
biconcave-disk-shaped RBCs, another with parachute-shaped
RBCs aligned in a single file, and a third with
slipper-shaped RBCs arranged as 2 parallel interdigitated
rows. The deformation-mediated clustering and the
arrangements of RBCs and microcapsules are relevant for many
potential applications in physics, biology, and medicine,
such as blood diagnosis and cell sorting in microfluidic
devices.},
keywords = {Capillaries / Computer Simulation / Elasticity /
Erythrocytes / Hematocrit / Indicator Dilution Techniques /
Liposomes / Microcirculation / Microfluidic Analytical
Techniques / Pressure / Rheology / Liposomes (NLM Chemicals)
/ J (WoSType)},
cin = {IFF-2 / JARA-HPC},
ddc = {000},
cid = {I:(DE-Juel1)VDB782 / $I:(DE-82)080012_20140620$},
pnm = {Kondensierte Materie},
pid = {G:(DE-Juel1)FUEK414},
shelfmark = {Multidisciplinary Sciences},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:19369212},
pmc = {pmc:PMC2669370},
UT = {WOS:000265174600004},
doi = {10.1073/pnas.0811484106},
url = {https://juser.fz-juelich.de/record/4229},
}