High-speed micro-PIV measurements of transient flow in microfluidic devices

Kyosuke Shinohara, Yasuhiko Sugii, Arata Aota, Akihide Hibara, Manabu Tokeshi, Takehiko Kitamori, Koji Okamoto

Research output: Contribution to journalArticlepeer-review

99 Citations (Scopus)


This paper reports a new technique of micro-resolution particle image velocimetry (PIV). To investigate transient phenomena in a microfluidic device, a high-speed micro-PIV technique was developed by combining a high-speed camera and a continuous wave (CW) laser. The technique was applied to a micro counter-current flow, consisting of water and butyl acetate. The velocity fields of water in the micro counter-current flow were visualized for a time resolution of 500 μs and a spatial resolution of 2.2 × 2.2 μm2. Using the micro-PIV technique, the vortex-like motions of fluorescent particles around the water-butyl acetate interface were captured clearly.

Original languageEnglish
Pages (from-to)1965-1970
Number of pages6
JournalMeasurement Science and Technology
Issue number10
Publication statusPublished - 2004 Oct
Externally publishedYes


  • High-speed imaging
  • Micro-PIV
  • Microfluidic device
  • Transient flow

ASJC Scopus subject areas

  • Instrumentation
  • Engineering (miscellaneous)
  • Applied Mathematics


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