TY - JOUR
T1 - Chaotic mixing enhancement in electro-osmotic flows by random period modulation
AU - Pacheco, J. Rafael
AU - Chen, Kangping
AU - Pacheco-Vega, Arturo
AU - Chen, Baisong
AU - Hayes, Mark
PY - 2008/2/11
Y1 - 2008/2/11
N2 - In this Letter we report a method for enhancing mixing of a passive tracer in an electro-osmotic flow in a rectangular microchannel. A time-periodic electric field across the microchannel, filled with an electrolyte solution, is applied in order to realize a well-mixed state. A random perturbation to the time-periodic electric field is introduced in order to break the invariant tori of the system and achieve better mixing results. It is shown that under such period-modulation the enhancement effect increases with the strength of the modulation, and it is much reduced as diffusion is increased.
AB - In this Letter we report a method for enhancing mixing of a passive tracer in an electro-osmotic flow in a rectangular microchannel. A time-periodic electric field across the microchannel, filled with an electrolyte solution, is applied in order to realize a well-mixed state. A random perturbation to the time-periodic electric field is introduced in order to break the invariant tori of the system and achieve better mixing results. It is shown that under such period-modulation the enhancement effect increases with the strength of the modulation, and it is much reduced as diffusion is increased.
KW - Chaotic mixing
KW - Electro-osmotic flow
KW - Low Reynolds number
KW - Random period modulation
KW - Stochasticity
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U2 - 10.1016/j.physleta.2007.08.051
DO - 10.1016/j.physleta.2007.08.051
M3 - Article
AN - SCOPUS:38649098173
SN - 0375-9601
VL - 372
SP - 1001
EP - 1008
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 7
ER -