Investigation of AC electro-osmotic flow based microfluidic mixer with micro rods
Author(s)
Advisor
Date
2018-09Publisher
Bilkent University
Language
English
Type
ThesisItem Usage Stats
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Abstract
AC electrokinetics (ACEK) is useful technique for providing species manipulation
and liquid transportation. This method is applicable to many fields like cell
separation, synthesis, pumping, mixing in microfluidics technologies. Mixing in
micro-scale is very problematic issue due to the domination of surface forces over
inertial forces. For acquiring complete mixing, extended channels or longer time
is needed. To accelerate mixing, active and passive micromixers are presented
in the literature. Among active micromixer types, ACEK-based micromixers are
preferred techniques due to their advances in preventing electrochemical reactions
and electrolysis. In this thesis, micromixer based on AC electroosmosis (ACEO)
around micro rods is introduced. In this study, mixer performance is evaluated
according to variable rod configurations, two different surface material and
ow
rates. Both computational modeling and experimentation are handled. Easy and
cheap fabrication with commercially available metal wires is adopted. By introducing
3D electrode pairs, 3D vortex profile is presented and the most in
uential
configuration is discovered.