We present a fluidic device that shows ratchet-like characteristics for
particle transport at low Reynolds. The ratchet consists of a
two-dimensional saw-tooth channel, within which a laminar flow is
generated by imposing a longitudinal pressure gradient. Particle
trajectories are calculated by solving the continuity and Navier-Stokes
equations for the fluid flow and the equations for particle transport in
both flow directions. The ratchet-like effect is connected with a large
asymmetry in the mean transit time, with regard to flow direction, due
to particle motion within zones of low flow velocity near the asymmetric
wall profile. We show how to obtain ratchet of particles with select
Stokes under given flow conditions by adjusting the geometry of the
ratchet channel.
%0 Journal Article
%1 WOS:000287524200005
%A Jr., Roberto L C Cisne
%A Vasconcelos, Talita F
%A Parteli, Eric J R
%A Jr., Jose S Andrade
%C TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
%D 2011
%I SPRINGER HEIDELBERG
%J MICROFLUIDICS AND NANOFLUIDICS
%K Channel Particle Ratchet effect} flow; fluids; in transport; {Particles
%N 3
%P 543-550
%R 10.1007/s10404-010-0688-y
%T Particle transport in flow through a ratchet-like channel
%V 10
%X We present a fluidic device that shows ratchet-like characteristics for
particle transport at low Reynolds. The ratchet consists of a
two-dimensional saw-tooth channel, within which a laminar flow is
generated by imposing a longitudinal pressure gradient. Particle
trajectories are calculated by solving the continuity and Navier-Stokes
equations for the fluid flow and the equations for particle transport in
both flow directions. The ratchet-like effect is connected with a large
asymmetry in the mean transit time, with regard to flow direction, due
to particle motion within zones of low flow velocity near the asymmetric
wall profile. We show how to obtain ratchet of particles with select
Stokes under given flow conditions by adjusting the geometry of the
ratchet channel.
@article{WOS:000287524200005,
abstract = {We present a fluidic device that shows ratchet-like characteristics for
particle transport at low Reynolds. The ratchet consists of a
two-dimensional saw-tooth channel, within which a laminar flow is
generated by imposing a longitudinal pressure gradient. Particle
trajectories are calculated by solving the continuity and Navier-Stokes
equations for the fluid flow and the equations for particle transport in
both flow directions. The ratchet-like effect is connected with a large
asymmetry in the mean transit time, with regard to flow direction, due
to particle motion within zones of low flow velocity near the asymmetric
wall profile. We show how to obtain ratchet of particles with select
Stokes under given flow conditions by adjusting the geometry of the
ratchet channel.},
added-at = {2022-05-23T20:00:14.000+0200},
address = {TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY},
author = {Jr., Roberto L C Cisne and Vasconcelos, Talita F and Parteli, Eric J R and Jr., Jose S Andrade},
biburl = {https://www.bibsonomy.org/bibtex/249df5ff379da5d3e232003735e72fd6f/ppgfis_ufc_br},
doi = {10.1007/s10404-010-0688-y},
interhash = {b725fdbcfd7365fff97eba4375866f1e},
intrahash = {49df5ff379da5d3e232003735e72fd6f},
issn = {1613-4982},
journal = {MICROFLUIDICS AND NANOFLUIDICS},
keywords = {Channel Particle Ratchet effect} flow; fluids; in transport; {Particles},
number = 3,
pages = {543-550},
publisher = {SPRINGER HEIDELBERG},
pubstate = {published},
timestamp = {2022-05-23T20:00:14.000+0200},
title = {Particle transport in flow through a ratchet-like channel},
tppubtype = {article},
volume = 10,
year = 2011
}