3D-inertia Valve Component for Centrifugal Force-based Micro Fluid Control

원심력기반 3차원 관성밸브 모델링을 통한 정밀 미세유체제어

  • Kang, Dong Hee (Department of Mechanical Engineering, Chonnam National University) ;
  • Kim, Na Kyong (Department of Mechanical Engineering, Chonnam National University) ;
  • Kang, Hyun Wook (Department of Mechanical Engineering, Chonnam National University)
  • Received : 2020.12.02
  • Accepted : 2021.03.04
  • Published : 2021.04.30


A three-dimensional slope valve component is used for controlling micro volume of liquid on a centrifugal force-based microfluidic disk platform, also called a lab-on-a-disk. The modeling factor of the slope valve component is determined to centrifugal force for liquid passing the crest of a slope valve via variation of slope length and angle as well as the radius to start point of slope valve. The centrifugal force is calculated by the equilibrium equation of the capillary and gravitational forces according to the microchannel surface roughness and the liquid volume, respectively. As a result, the slope valve is analyzed by the minimum angular velocity for liquid passing at crest point and the ratio between the length of micro liquid and slope length to obtain the factors for optimal slope angle modeling.



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