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Actuators 2018, 7(4), 68;

Property Investigation of Replaceable PDMS Membrane as an Actuator in Microfluidic Device

2,3,†,* , 2
Department of Marine Engineering, Dalian Maritime University, Dalian 116026, China
Center for Biosystems Dynamics Research, RIKEN, Osaka 565-0871, Japan
Division of Materials Science, Nara Institute of Science and Technology, Nara 630-0192, Japan
Both authors contributed equally to this work.
Authors to whom correspondence should be addressed.
Received: 15 July 2018 / Revised: 19 September 2018 / Accepted: 25 September 2018 / Published: 28 September 2018
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This paper investigates the basic deflection properties of polydimethylsiloxane (PDMS) membrane as an actuator component in a microfluidic device. Polydimethylsiloxane membrane is a widely used structure in various applications in microfluidics. Most of the applications using PDMS membrane as actuators are pumps, valves, microlenses, and cell stimulators. In these applications, PDMS membranes are deflected to function by applied pressure. However, based on our literature survey, correlations between thickness, applied air pressure, and the deflection properties of replaceable PDMS membrane have not been theoretically and experimentally investigated yet. In this paper, we first conducted a simulation to analyze the relationship between deflection of the replaceable PDMS membrane and applied pressure. Then we verified the deflection of the PDMS membrane in different experimental conditions. Finally, we demonstrated that the PDMS membrane functioned as a valve actuator in a cell-capturing device as one application. We expect this study would work as an important reference for research investigations that use PDMS membrane as an actuator. View Full-Text
Keywords: replaceable PDMS membrane; actuator; microfluidic device replaceable PDMS membrane; actuator; microfluidic device

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Yuan, Y.; Yalikun, Y.; Ota, N.; Tanaka, Y. Property Investigation of Replaceable PDMS Membrane as an Actuator in Microfluidic Device. Actuators 2018, 7, 68.

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