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Novel on-chip microfluidic transport system with electrochemically controlled bubble formation

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2 Author(s)
Suzuki, H. ; Inst. of Mater. Sci., Tsukuba Univ., Japan ; Yoneyama, R.

An integrated micro fluidic system was constructed with electrochemically actuated pumps and valves. It consists of a glass substrate with actuating electrodes and a PDMS substrate with micro flow channels and containers. A hydrogen bubble was generated or shrunk on a platinum black working electrode. This phenomenon was used to construct a syringe pump, a valve, and to separate the electrolyte solution from a sample solution. The system features low operating voltage and power consumption. Co-operative integration of system components facilitated withdrawal of external dye solutions from injection ports and subsequent microfluidic transport. A sheath flow was observed in a mixing channel at the end of the flow channels. Chemiluminescence originating from an enzymatic reaction was observed after transporting and mixing of the two precursor solutions.

Published in:

TRANSDUCERS, Solid-State Sensors, Actuators and Microsystems, 12th International Conference on, 2003  (Volume:1 )

Date of Conference:

8-12 June 2003

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