A valveless micropump driven by differential SMA actuator

Liuke Xia; Fengxiang Wang; Jun Lu

doi:10.1117/12.779366

1 November 2007 A valveless micropump driven by differential SMA actuator

Liuke Xia, Fengxiang Wang, Jun Lu

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 64230Y (2007) https://doi.org/10.1117/12.779366
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

As fluid power sources, the micropumps are used in various applications such as biomedical engineering, micro electromechanical system and medical field etc. In this paper, a new type of valveless micropump driven by differential shape memory alloy (SMA) actuator is proposed. The valveless pump has inlet and outlet with tapered tube and does not need control of valves. The flow rectification of the valveless pump can be realized based on the nozzle/diffuser action. The differential SMA actuator controlled by alternative current makes the baffle of the valveless pump reciprocating motion. The operation principle, structure and control method of differential SMA actuator, the one-way flow mechanism and structure design of the valveless pump are analyzed. The experimental results indicate that the operation principle and design method of the valveless pump are feasible.

Citation Download Citation

Liuke Xia, Fengxiang Wang, and Jun Lu "A valveless micropump driven by differential SMA actuator", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64230Y (1 November 2007); https://doi.org/10.1117/12.779366

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