Sensors 2012, 12(10), 14053-14067; doi:10.3390/s121014053
Article

Cooperative Suction by Vertical Capillary Array Pump for Controlling Flow Profiles of Microfluidic Sensor Chips

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Received: 23 August 2012; in revised form: 27 September 2012 / Accepted: 10 October 2012 / Published: 18 October 2012
(This article belongs to the Special Issue Microfluidic Devices)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A passive pump consisting of integrated vertical capillaries has been developed for a microfluidic chip as an useful component with an excellent flow volume and flow rate. A fluidic chip built into a passive pump was used by connecting the bottoms of all the capillaries to a top surface consisting of a thin layer channel in the microfluidic chip where the thin layer channel depth was smaller than the capillary radius. As a result the vertical capillaries drew fluid cooperatively rather than independently, thus exerting the maximum suction efficiency at every instance. This meant that a flow rate was realized that exhibited little variation and without any external power or operation. A microfluidic chip built into this passive pump had the ability to achieve a quasi-steady rather than a rapidly decreasing flow rate, which is a universal flow characteristic in an ordinary capillary.
Keywords: microfluidics; capillary; flow rate; passive pump
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MDPI and ACS Style

Horiuchi, T.; Hayashi, K.; Seyama, M.; Inoue, S.; Tamechika, E. Cooperative Suction by Vertical Capillary Array Pump for Controlling Flow Profiles of Microfluidic Sensor Chips. Sensors 2012, 12, 14053-14067.

AMA Style

Horiuchi T, Hayashi K, Seyama M, Inoue S, Tamechika E. Cooperative Suction by Vertical Capillary Array Pump for Controlling Flow Profiles of Microfluidic Sensor Chips. Sensors. 2012; 12(10):14053-14067.

Chicago/Turabian Style

Horiuchi, Tsutomu; Hayashi, Katsuyoshi; Seyama, Michiko; Inoue, Suzuyo; Tamechika, Emi. 2012. "Cooperative Suction by Vertical Capillary Array Pump for Controlling Flow Profiles of Microfluidic Sensor Chips." Sensors 12, no. 10: 14053-14067.

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