Open AccessDesign of super-efficient mixer based on induced charge electroosmotic
Author(s) -
Kai Zhang,
Xiao-jing Mi,
Mingzhou Yu
Publication year - 2012
Publication title -
thermal science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.339
H-Index - 43
eISSN - 2334-7163
pISSN - 0354-9836
DOI - 10.2298/tsci1205534z
Subject(s) - electrokinetic phenomena , microchannel , mixing (physics) , janus , cylinder , electric field , mechanics , materials science , flow (mathematics) , flux (metallurgy) , charge (physics) , physics , nanotechnology , mechanical engineering , engineering , metallurgy , quantum mechanics
The super-efficient sample mixing induced by the induced-charge electrokinetic flow around conducting/Janus cylinder was numerically studied in a confined |U-shaped microchannel with suddenly applied DC weak electric filed. It’s found that there are four large circulations around the conducting cylinder and two smaller circulations around the Janus cylinder. The results show that samples can still be well mixed with high flux due to the induced electroosmosis. It is demonstrated that the local flow circulations provide effective means to enhance the flow mixing between different solutions. The dependence of the degree of mixing enhancement on the electric field is also predicted
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