Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Droplet Bistability in Microchannel and its Application to Flow Control

마이크로 채널 내부에서의 액적의 쌍안정성과 이를 활용한 유동 제어

  • 이범준 (서울대학교 기계항공공학부) ;
  • 유정열 (서울대학교 기계항공공학부)
  • Received : 2010.12.09
  • Accepted : 2010.12.27
  • Published : 2010.12.31
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Abstract

We demonstrate the droplet bistability in a microchannel which has two symmetric necks that operate as capillary valves. It is shown that there are certain flow conditions, determined by droplet velocity and droplet size, to achieve bistability. Droplet bistabililty allows simple but precise control of droplet at a bifurcation channel. Therefore, by an appropriate channel design to induce droplet bistability, we can distribute droplets at a junction passively in the manner of perfect alternation and perfect switching in the choice of the outlets.

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References

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