Experimental verification of the flow characteristics of an active controlled microfluidic valve with annular boundary

Chun-Peng Pan; Dai-Hua Wang

doi:10.1117/12.2046594

9 March 2014 Experimental verification of the flow characteristics of an active controlled microfluidic valve with annular boundary

Chun-Peng Pan, Dai-Hua Wang

Author Affiliations +

Proceedings Volume 9057, Active and Passive Smart Structures and Integrated Systems 2014; 90571B (2014) https://doi.org/10.1117/12.2046594
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

Abstract

The principle and structural configuration of an active controlled microfluidic valve with annular boundary is presented in this paper. The active controlled flowrate model of the active controlled microfluidic valve with annular boundary is established. The prototypes of the active controlled microfluidic valves with annular boundaries with three different combinations of the inner and outer radii are fabricated and tested on the established experimental setup. The experimental results show that: (1) The active controlled microfluidic valve with annular boundary possesses the on/off switching and the continuous control capability of the fluid with simple structure and easy fabrication processing; (2) When the inner and outer diameters of the annular boundary are 1.5 mm and 3.5 mm, respectively, the maximum flowrate of the valve is 0.14 ml/s when the differential pressure of the inlet and outlet of the valve is 1000 Pa and the voltage applied to circular piezoelectric unimorph actuator is 100 V; (3) The established active controlled flowrate model can accurately predict the controlled flowrate of the active controlled microfluidic valves with the maximum relative error of 6.7%. The results presented in this paper lay the foundation for designing and developing the active controlled microfluidic valves with annular boundary driven by circular piezoelectric unimorph actuators.

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Chun-Peng Pan and Dai-Hua Wang "Experimental verification of the flow characteristics of an active controlled microfluidic valve with annular boundary", Proc. SPIE 9057, Active and Passive Smart Structures and Integrated Systems 2014, 90571B (9 March 2014); https://doi.org/10.1117/12.2046594

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KEYWORDS

Microfluidics

Actuators

Protactinium

Head

Switching

Control systems

Modeling

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