具有分合Dean渦流。設計微混合器的幾何特徵，利用商用CFD軟體模擬的方式，找出不同圖樣特徵的微結構對混合效率的影響。同時以微機電製程製作出實際尺寸的微混合器，在光學顯微鏡下觀測酚酞/氫氧化鈉溶液的混合效應，可快速獲得某一高度橫截面中流場與濃度場的定性結果，並運用影像處理方法，可獲得流道縱截面的混合指標。最後獲得最佳化的幾何特徵參數。

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​A novel parallel laminar micromixer with a two-dimensional staggered Dean Vortex micromixer is optimized and fabricated in our study. Dean vortices induced by centrifugal forces in curved rectangular channels cause fluids to produce secondary flows. The split-and-recombination (SAR) structures of the flow channels and the impinging effects reduce the diffusion distance of two fluids. Three different designs of a curved channel micromixer are introduced to evaluate the mixing performance of the designed micromixer. Mixing performances are demonstrated utilizing a pH indicator using an optical microscope and fluorescent particles via a confocal microscope at different flow rates corresponding to Reynolds numbers (Re) ranging from 0.5 to 50. The comparison between the experimental data and numerical results shows a very reasonable agreement. At a Re of 50, the mixing length at the sixth segment, corresponding to the downstream distance of 21.0 mm, can be 4 times shorter than when the Re equals 1. An optimization of this micromixer is performed with two geometric parameters. These are the angle between the lines from the center to two intersections of two consecutive curved channels, θ, and the angle between two lines of the centers of three consecutive curved channels, φ. It can be found that the maximal mixing index is related to the maximal value of the sum of θ and φ, which is equal to 139.82°.

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