Design of a new micromixer for instant mixing based on the collision of micro segments

Hideharu Nagasawa, Nobuaki Aoki, Kazuhiro Mae

    Research output: Contribution to journalArticlepeer-review

    95 Citations (Scopus)


    A new type of micromixer for rapid mixing was developed based on mixing by both kinetic energy and molecular diffusion of fluids. The rapid mixing was realized by the collision of micro segments, which were divided into several streams in the radial, at the center of the mixer. The excellent performance of the developed micromixer was confirmed by examining the Villermaux/Dushman reaction and the precipitation of polymer particles by phase separation. From these results, it was clarified that the rapid mixing was driven by both the breaking of micro segments under a high shear rate and instant molecular diffusion between micro segments. In addition, the mixer had a high throughput and corresponded to a wide range of flow rate ratios of fluids. Thus, it is expected that the proposed design concept for micro mixing will give us an efficient micro processing route in the future.

    Original languageEnglish
    Pages (from-to)324-330
    Number of pages7
    JournalChemical Engineering and Technology
    Issue number3
    Publication statusPublished - 2005 Mar 1

    ASJC Scopus subject areas

    • Chemistry(all)
    • Chemical Engineering(all)
    • Industrial and Manufacturing Engineering


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