Mass transfer enhancement due to a soft elastic boundary |
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Authors: | Abhishek Shrivastava |
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Affiliation: | Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA |
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Abstract: | Electrochemical mass transfer experiments are performed in a channel in which one wall is made of a soft polymer gel. Mass transfer is enhanced up to 25% relative to rigid walls when the ratio of viscous to elastic forces on the gel increases above a critical value. The enhancement is attributed to a hydrodynamic instability occurring at the fluid-gel interface. The results suggest that soft elastic boundaries could serve as a mechanism for improving mixing and transport in the laminar flows characteristic of microfluidic devices and other small-scale geometries. |
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Keywords: | Convective transport Gels Interface Laminar flow Mass transfer Mixing |
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