Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on an Electrical Biosignal Detection System for the Microbiochip

마이크로바이오칩의 전기신호검출 시스템에 관한 연구

  • 박정연 (한양대학교 대학원 정밀기계공학과) ;
  • 박재준 (한양대학교 대학원 정밀기계공학과) ;
  • 권기환 (한양대학교 대학원 정밀기계공학과) ;
  • 조남규 (한양대학교 기계정보경영학부) ;
  • 안유민 (한양대학교 기계정보경영학부) ;
  • 이성환 (한양대학교 기계정보경영학부) ;
  • 황승용 (한양대학교 분자생명과학부)
  • Published : 2005.04.01
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Abstract

In this study, a microchip system fabricated with MEMS technology was developed to detect bioelectrical signals. The developed microchip using the conductivity of gold nanoparticles could detect the biopotential with a high sensitivity. For designing the microchip, simulations were performed to understand the effects of the size and number of nanoparticles, and the sensing width between electrodes on the detection of biosignals. Then, a series of experiment was performed to validate the simulation results and understand the feasibility of the proposed microchip design. Both simulation and experimental results showed that as the sensing width between electrodes increased the conductivity decreased. Also, the conductivity increased as the density of gold nanoparticles increased. In addition, it was found that the conductivity that changes with the nanoparticles density could be approximated by a cumulative normal distribution function. The developed microchip system could effectively apply when a biosignals should be measured with a high sensitivity.

Keywords

References

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