Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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PDMS/Glass Serpentine Microchannel Chip for PCR with Bubble Suppression in Sample Injection

시료주입시 기포발생이 억제된 반응조 형태의 중합효소연쇄반응용 PDMS/유리 바이오칩

  • 조철호 (삼성전자 통신연구소 통신모듈 Lab.) ;
  • 조웅 (한양대학교 대학원 기계공학과) ;
  • 황승용 (한양대학교 기계공학과) ;
  • 안유민 (한양대학교 분자생명과학부)
  • Published : 2006.10.01
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Abstract

This paper reports low-cost microreactor $(10{\mu}{\ell})$ biochip for the DNA PCR (polymerase chain reaction). The microbiochip $(20mm{\times}28mm)$ is a hybrid type which is composed of PDMS (polydimethylsiloxane) layer with serpentine micochannel $(360{\mu}m{\times}100{\mu}m)$ chamber and glass substrate integrated with microheater and thermal microsensor. Undesirable bubble is usually created during sample loading to PMDS-based microchip because of hydrophobic chip surface. Created bubbles interrupt stable biochemical reaction. We designed improved microreactor chamber using microfluidic simulation. The designed reactor has a coner-rounded serpentine channel architecture, which enables stable injection into hydrophobic surface using micropipette only. Reactor temperature needed to PCR reaction is controlled within ${\pm}0.5^{\circ}C$ by PID controller of LabVIEW software. It is experimentally confirmed that SRY gene PCR by the fabricated microreactor chip is performed for less than 54 min.

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References

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