Pneumatic micro dispenser system with no dead volume for portable micro chemical device

Tadahiro Hasegawa, Fumiyuki Omatsu, Toshiyuki Tsuji, Koji Ikuta

Research output: Contribution to conferencePaper

5 Citations (Scopus)

Abstract

Two kinds of switching micro fluidic chips called "Dead volume-free" micro fluidic chip for portable micro chemical devices have been developed successfully. The 10-directional switching valve chip and the sampling chip as components of the air pressure drive micro dispenser system were developed successfully. The first one is the sampling chip that divides liquid every 1μL or 0.5μL without any dead volume of sample by decompressing and compressing the air. This simple operation is caused by our original novel detection method of micro fluid and check valves of hat shape. The second is the switching valve chip that can select the outlet. This chip has a special rotary mechanism consisting of silicone rubber ring for leak-preventions and the precise auto-positioning mechanism. This chip can switch ten outlets by built-in micro solenoid (1N, 6V DC) under high leakage pressure (higher than 500kPa). Since the both of chips were fabricated using our original "hybrid microstereolithography" (hybrid-IH process), micro assembling and bonding are not needed.

Original languageEnglish
Pages1112-1114
Number of pages3
Publication statusPublished - 2006 Jan 1
Externally publishedYes
Event10th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2006 - Tokyo, Japan
Duration: 2006 Nov 52006 Nov 9

Conference

Conference10th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2006
CountryJapan
CityTokyo
Period06/11/506/11/9

Keywords

  • 10-directional switching valve
  • Check valves
  • Hybrid microstereolithography
  • Micro dispenser
  • Photosensor

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Bioengineering

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  • Cite this

    Hasegawa, T., Omatsu, F., Tsuji, T., & Ikuta, K. (2006). Pneumatic micro dispenser system with no dead volume for portable micro chemical device. 1112-1114. Paper presented at 10th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2006, Tokyo, Japan.