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A Study on an Electrical Biosignal Detection System for the Microbiochip  

Park Jeong Yeon (한양대학교 대학원 정밀기계공학과)
Park Jae Jun (한양대학교 대학원 정밀기계공학과)
Kwon Ki Hwan (한양대학교 대학원 정밀기계공학과)
Cho Nahm Gyoo (한양대학교 기계정보경영학부)
Ahn Yoo Min (한양대학교 기계정보경영학부)
Lee Seoung Hwan (한양대학교 기계정보경영학부)
Hwang Seung Yong (한양대학교 분자생명과학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.22, no.4, 2005 , pp. 181-187 More about this Journal
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
MEMS technology; Microbiochip; Electrical biosignal detection; Gold particle; Conductivity;
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Times Cited By KSCI : 1  (Citation Analysis)
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