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@ARTICLE{Schlenk:859967,
author = {Schlenk, Mathias and Drechsler, Markus and Karg, Matthias
and Zimmermann, Walter and Trebbin, Martin and Förster,
Stephan},
title = {{S}plitting and separation of colloidal streams in
sinusoidal microchannels},
journal = {Lab on a chip},
volume = {18},
number = {20},
issn = {1473-0189},
address = {Cambridge},
publisher = {RSC},
reportid = {FZJ-2019-00773},
pages = {3163 - 3171},
year = {2018},
abstract = {The control of the distribution of colloidal particles in
microfluidic flows plays an important role in biomedical and
industrial applications. A particular challenge is to induce
cross-streamline migration in laminar flows, enabling the
separation of colloidal particles according to their size,
shape or elasticity. Here we show that viscoelastic fluids
can mediate cross-streamline migration of deformable
spherical and cylindrical colloidal particles in sinusoidal
microchannels at low Reynolds numbers. For colloidal streams
focused into the center of the channel entrance this leads
to a symmetric stream-splitting and separation into four
substreams. The degree of stream splitting and separation
can be controlled via the flow rates, viscoelasticity of the
focusing fluid, and the spatial microchannel modulation with
an upper limit when reaching the microchannel walls. We
demonstrate that this effect can be used to separate
flexible particles of different size and shape. This
methodology of cross-stream migration has thus great
potential for the passive separation of colloids and cells
in microfluidic channels.},
cin = {ICS-1 / Neutronenstreuung ; JCNS-1},
ddc = {540},
cid = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106},
pnm = {551 - Functional Macromolecules and Complexes (POF3-551) /
6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
/ 6215 - Soft Matter, Health and Life Sciences (POF3-621)},
pid = {G:(DE-HGF)POF3-551 / G:(DE-HGF)POF3-6G4 /
G:(DE-HGF)POF3-6215},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30187066},
UT = {WOS:000448341000011},
doi = {10.1039/C8LC00255J},
url = {https://juser.fz-juelich.de/record/859967},
}