Electrohydrodynamic Disturbance

In active micromixer, pressure disturbance, electrohydrodynamic disturbance, dielec-trophoretic disturbance, electrokinetic disturbance, and magnetohydrodynamic disturbances are used to disturb the laminar streams (see Figure 4.13). The pressure pulse divides the... 

Figure 7.9 Active micromixers (a) serial segmentation (b) pressure disturbance along mixing channel (c) integrated microstirrer in the mixing channel (d) electrohydrodynamic disturbance (e) dielectrophoretic disturbance (f) electrokinetic disturbance in a mixing chamber (g) electrokineticdisturbance in a mixing channel (h) thermal disturbance (i) combination of serial segmentation and focusing.

The term active mixer or active microimxef refers to a microfluidic device in which species mixing is enhanced by the application of some form of external energy disturbance. Typically, this disturbance is generated either by moving components within the micromixer itself, e.g. magnetically-actuated stirrers, or by the application of an external force field, e. g. pressure, ultrasound, acoustic, electrohydrodynamic, electrokinetic, dielectrophoretic, magneto-hydrodynamic, thermal, and so forth [1]. 

Figure 4.13 Schematic showing active mixing strategy (a) pressure disturbance leading to segmentation and (b) dielectrophoretic, electrohydrodynamic, electrokinetic, and magnetohydrodynamic disturbance generated by the electrode...

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