Traditionally, micromixing has been thought to be governed by molecular diffusion. However, the authors consider that advection is important in the mixing enhancement and applicable to micromixing devices in many industrial fields. Here, the Marangoni convection, a type of shear flow induced at gas–liquid free interfaces, is introduced as an additional source for micromixing. To evaluate the proposal, two liquids with different surface tensions values were mixed in a capillary channel fabricated by the photolithography technique. The utility of Marangoni convection was confirmed in rapid mixing by the flow experiments.
A Study on Micromixing Utilizing Marangoni Effect Induced on Gas–Liquid Free Interfaces
Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MICRO- AND NANO-MANUFACTURING. Manuscript received April 4, 2014; final manuscript received January 20, 2015; published online February 23, 2015. Assoc. Editor: John P. Coulter.
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Yamada, T., and Ono, N. (June 1, 2015). "A Study on Micromixing Utilizing Marangoni Effect Induced on Gas–Liquid Free Interfaces." ASME. J. Micro Nano-Manuf. June 2015; 3(2): 021003. https://doi.org/10.1115/1.4029684
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