Microfluidic valve array control system integrating a fluid demultiplexer circuit

Kentaro Kawai, Kenta Arima, Mizuho Morita, Shuichi Shoji

研究成果: Article査読

15 被引用数 (Scopus)


This paper proposes an efficient control method for the large-scale integration of microvalves in microfluidic systems. The proposed method can control 2n individual microvalves with 2n + 2 control lines (where n is an integer). The on-chip valves are closed by applying pressure to a control line, similar to conventional pneumatic microvalves. Another control line closes gate valves between the control line to the on-chip valves and the on-chip valves themselves, to preserve the state of the on-chip valves. The remaining control lines select an activated gate valve. While the addressed gate valve is selected by the other control lines, the corresponding on-chip valve is actuated by applying input pressure to the control line to the on-chip valves. Using this method would substantially reduce the number of world-to-chip connectors and off-chip valve controllers. Experiments conducted using a fabricated 28 microvalve array device, comprising 256 individual on-chip valves controlled with 18 (2 x 8 + 2) control lines, yielded switching speeds for the selected on-chip valve under 90 ms.

ジャーナルJournal of Micromechanics and Microengineering
出版ステータスPublished - 2015 6月 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 材料力学
  • 機械工学
  • 電子工学および電気工学


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