Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Analysis of 3-Dimensional Hydrodynamic Focusing in Circular Capillary Tube and Rectangular Microchannel

원형 모세관과 사각형 단면의 미세채널에서 3차원 수력학적 집속유동 분석

  • 윤성희 (국민대학교 대학원 기계공학과) ;
  • 김경훈 (국민대학교 기계자동차공학부) ;
  • 김중경 (국민대학교 기계시스템공학부)
  • Received : 2011.05.15
  • Accepted : 2011.06.14
  • Published : 2011.06.30
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Abstract

Hydrodynamic focusing technique to generate focused flow has been used for flow cytometry in microfluidic devices. However, devices with circular capillary tubes made of glass are not suitable for flow visualization or optical signal detection because the rays of light are distorted at the curved interface. We devised a new acrylic chamber assembled with a pulled micropipette and a rectangular microchannel made of glass. This new channel geometry enabled us to visualize the three-dimensional (3D) flow characteristics with confocal imaging technique. We analyzed the 3D hydrodynamic focusing in a circular capillary tube and a rectangular microchannel over a practical range of flow rates, viscosities and pressure drops.

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References

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