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Active Mixer

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Encyclopedia of Microfluidics and Nanofluidics


Active mixing; Dynamic mixing


The term “active mixer” or “active micromixer” refers to a microfluidic device in which species mixing is enhanced by the application of some form of external energy disturbance. Typically, this disturbance is generated either by moving components within the micromixer itself, e.g., magnetically actuated stirrers, or by the application of an external force field, e.g., pressure, ultrasound, acoustic, electrohydrodynamic, electrokinetic, dielectrophoretic, magnetohydrodynamic, thermal, and so forth [1, 2].


Mixing occurs in many natural phenomena, including geophysical, ocean, and atmospheric flows, and is also an important step in industrial processes involving chemical reactions, fermentation reactions, combustion, and so forth. Traditionally, industrial mixing applications have always been performed using large-scale apparatus. However, in recent years, microscale devices (commonly referred to as microfluidic devices) have...

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Correspondence to Ruey-Jen Yang .

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© 2013 Springer Science+Business Media New York

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Chang, CC., Fu, LM., Yang, RJ. (2013). Active Mixer. In: Li, D. (eds) Encyclopedia of Microfluidics and Nanofluidics. Springer, Boston, MA.

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