**Author details**

**Figure 22.** Results of four cycles of BT procedures

column).

Biomedical Engineering

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In Figure 23, the experimental folding results in the first three cycles (center column) were compared with the ideal BT illustration (left column) and the numerical analysis (right

Micro-Nano Mechatronics — New Trends in Material, Measurement, Control, Manufacturing and Their Applications in

The experimentalresults show relatively good similarities with the numerical analyticalresults of two, four, and eight layers folded inside flow passages. Meanwhile, compared with the ideal BT illustration, there are not small differences, especially in its marginal regions. The every folded edge wasn't processed perfectly because of the shear resistance decreasing the flow rate. The mixing performance, however, relies mainly on interlayer distances near the center of flow path. Therefore, the proposed miniature BT mixer is able to achieve high mixing

performance even though it doesn't show the ideal BT mixing.

**Figure 23.** Comparison among cross-sections after each BT cycle

Eiji Shamoto, Norikazu Suzuki, Takashi Kato and Burak Sencer

Department of Mechanical Science and Engineering, Nagoya University, Nagoya, Japan
