A new flow control method based on multi-resonance valveless micropump

Abstract eng:
In comparison to traditional valveless micropumps, the pumping efficiency of the micropump proposed in this work has enhanced to about one order of magnitude with the aid of new elastomer design. A revised lumped model can effectively predict the frequency response of the system that could be well quantified by the geometry and material of elastomer design in the micropump. Furthermore, excellent consistency of various elastomer designs between experiment and theory has demonstrated another waveguide character of the present design. A micropump with three elastic outlet buffers was designed for having three distinct resonant frequencies, and a novel frequency-selective pumping method based upon Frequency-Division—Multiplexing (FDM) was used to execute the sequential and parallel flow manipulations without additional valves and the need of multi-pumps for general microfluidic applications.

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