具有分合螺旋流。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和器，以共軛焦顯微鏡進行量測，在共軛焦顯微鏡量測羅丹明B/水溶液的濃度分佈，並運用影像處理方法，可獲得流道縱截面的混合指標。

最後與數值分析結果進行比較。

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This study presents a novel crosswise ridge micromixer (CRM) with a series of microstructures placed on channels' top and bottom floors. Passive micromixers fabricated by Micro-Electro-Mechanical Systems (MEMS) technologies with slanted ridges are investigated. Numerical simulations and experimental investigations are undertaken to determine the effects of various microstructure patterns on mixing efficiency with Reynolds numbers (Re) of 0.05–50. The confocal images at the cross sections along the channel with ridges on both the channel top and bottom are first investigated in our study. A significant amount of split and recombination (SAR) helical flows are produced by the slanted ridges embedded on the two floors of the channels. The effects of non-dimensional parameters, such as the Re and geometrical parameters, on mixing performance are presented in terms of the mixing index. When the Re exceeds 1, the mixing index of the micromixer with slanted ridges increases as the Re increases further. Simulation results are presented and compared with experimental data. The trends of the experimental results and numerical data are very similar. Finally, various slanted ridges in the same orientation in one channel cycle are investigated to determine mixing performance in microchannels. The mixing performance achieves optimum value in cases where the number of ridges per cycle is equal to 8.