A dielectric elastomer(DE)valveless micropump with plane diffuser/nozzle elements is investigated. The structure of the valveless micropump is designed by analyzing the effects of angle
length
minimum width of the diffuser-nozzle to the diffusivity. Based on UV-LIGA technique
the DE diaphragms and the SU-8 structure are bonded and the valveless micropump is accomplished. A DE diaphragms structure is conformed by experiment to realize the pumping. The maximum flow rate of 21.2 μL/min is achieved under 3 500 V
8 Hz sine wave. The valveless micropump with simple structure and lower cost demonstrates its further application foreground.
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references
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