An efficient micromixer actuated by induced-charge electroosmosis using asymmetrical floating electrodes

Inducing AC-electroosmotic flow using electric field manipulation with insulators

“…The EOF produced in this way is frequency dependent with a maximum determined by the RCtime of the system, typically around several kHz 20 . Next to the classical coplanar configurations, other electrode configurations have been studied 3,8,21,22 . The similarity between these studies is that they use specific electrode (conductor) geometries to change the shape of the electric field and concomitantly, the electroosmotic flow.…”

Mixing Enhancement in Electroosmotic Micromixers

“…Many researchers have investigated the mixing performance of electroosmotic devices [12][13][14][15][16]. Bhattacharyya and Bera [12] investigated the mixing index in a long microchannel considering pressure-driven electroosmotic flow.…”

“…They demonstrated that mixing efficiency is low for two solutions when one of them has very high ionic concentration and another has low concentration. Zhang et al [14] used planar floating electrodes to enhance the mixing index and reached the mixing efficiency of 94.7% for flow rate of 1500 μm/s. they showed that the mixing index increases with the voltage and decreases with the inlet velocity and fluid viscosity.…”

A novel three-dimensional electroosmotic micromixer based on the Koch fractal principle

“…[1][2][3][4] Among them, the micro scale uid mixing has always been a hot issue in the eld of scientic research; therefore, a micromixer has become an important component of the chip laboratory system. [5][6][7][8] Therefore, to improve the mixing efficiency of the uid in the micromixer, researchers usually change the geometry of the micromixer or add external conditions to improve the mixing efficiency of the working uid. [9][10][11] Generally, micromixers are divided into two types according to their working principles: passive and active.…”