Journal of the Korean Society of Visualization (한국가시화정보학회지)

The Korean Society of Visualization (한국가시화정보학회)
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Study on Continuous-Flow Particle Separation in a Microchannel using Dielectrophoresis

마이크로 채널 내에서의 유전영동을 이용한 입자의 연속적인 분리에 대한 연구

  • 류정은 (포항공과대학교 기계공학과) ;
  • 강관형 (포항공과대학교 기계공학과)
  • Published : 2010.01.08
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Abstract

In this work, a dielectrophoresis-based particle-separation device is developed which is to be used to continuously separate particles in microchannels. We fabricated the particle-separation device with combining the benefits of electrode-based DEP and insulator-based DEP. The DEP forces are generated by an array of electrodes located in both sidewalls of a main channel. According to the magnitude and frequency of electrical signals, particles with different dielectric properties experience different DEP forces, and therefore, continuously move along different streamlines in the main flow channel without need of pre-focusing process. Based on this mechanism, we examined the performance of the device by controlling the trajectory of polystyrene particles. This device is applicable to the investigation of dielectric properties of biological cells as well as the continuous separation of biological cells.

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References

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