Micromixers based on chaotic advection - Micromixers Fundamentals Design and Fabrication - page 196

FIGURE 6.1
Trajectory near the entrance of a T-mixer at different Reynolds numbers: (a) Re ¼ 1.32; (b) Re ¼ 119; and
(c) Re ¼ 146.
(Reprinted with permission from [2] .)
the junction into its path. This effect causes the transversal cross-flow of the fluid between the two
channel halves.
The high Reynolds number required for chaotic advection needs high driving pressure up to 5 bars.
Thus, the micromixer should be fabricated in a solid substrate. Bothe et al. [2] and Wong et al. [5]
reported T-mixers made of silicon. The rectangular microchannels are etched in silicon using deep