Circular micromixer

Fig. 3 Parallel lamination mlcromlxer types (a) Bifurcation-type feeds (Adapted from [66] with kind permission from Springer Science), (b) Interdigital-type feeds, super focus mixer (Reproduced from [67] with permission. Copyright Wiley-VCH ). (c) Chessboard micromixer (Adapted from [68] with permission. Copyright lOP Publishing), (d) Circular micromixer (Adapted from [69] with permission. Copyright lOP Publishing)...

A further interesting concept for the creation of multilaminated streams is that applied in circular micromixers [69, 80, 81]. Circular micromixers rely on the formation of a vortex due to the self-rotation of the fluid stream injected in a quasitangential orientation to the circular mixing chamber (Fig. 3d). Excellent... 

Fig. 13 Integrated PDMS microfluidic system comprising four modules an injection/separation module in which pumping was entirely supported by electroosmotics a protein trapping module a circular micromixer where pumping was mechanically achieved and an enzyme reaction module. Fluidic channels are in red, actuation channels are in blue-green. Valve actuation channels were filled with water in order to avoid air entering the fluidic channels through the PDMS membranes. Integrated valves are numbered from 1 to 6. Reproduced from [135]...

Figure 4.8 A circular micromixer operating on principle of Taylor dispersion...

Consider a circular micromixer with mean diameter, D, equal to 2 cm. One microgram of dye molecule is injected at one end of the micromixer as shown below. (1) Calculate the diffusion time for the dye to diffuse to opposite end of the micromixer, that is, move by 180°. (2) If a peristaltic pump mounted on the micromixer imposes an average... 

To improve the efficiency of the current micromixer, a new nonmechanical micromixer is introduced in this entry which works based on the ICEK phenomena. Consider one microchamber which is connected to two microchannels. The inlet channel is placed on the left-hand side of the chamber and delivers two parallel streams of two different fluids into the microchamber from entrances A and B (Fig. 2). On the right-hand side of the microchamber, there is a microchaimel which is used as an outlet. A circular fully conducting particle is placed in the middle of the microchamber. The density of this particle is chosen to be exactly the same as the fluid which is filled in the micromixer. The electrolyte properties and dimension of this micromixer are listed in Table 1. 

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