Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
권호 표지

The Improvement of Sensing Performance of ISFET Glucose and Sucrose Sensors by Using Platinum Electrode and Photo-crosslinkable Polymers

백금전극과 감광성 고분자를 이용한 ISFET 포도당 및 자당센서의 감지성능 개선

  • Cho, Byung-Woog (Dept. of Electronic Eng., Kyungpook National University) ;
  • Jang, Won-Duk (Design Dept. 2, LG Semicon Co., Ltd.) ;
  • Kim, Chang-Soo (Sensor Technology Research Center, Kyungpook National University) ;
  • Park, Lee-Soon (Dept. of Polymer Science, Kyungpook National University) ;
  • Sohn, Byung-Ki (Sensor Technology Research Center, Kyungpook National University)
  • 조병욱 (경북대학교 전자공학과) ;
  • 장원덕 (LG 반도체 설계2실) ;
  • 김창수 (경북대학교 센서기술연구소) ;
  • 박이순 (경북대학교 고분자공학과) ;
  • 손병기 (경북대학교 센서기술연구소)
  • Published : 1995.11.30
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Abstract

The ISFET glucose and sucrose sensors containing platinum electrode and photopolymeric enzyme membrane were fabricated. The platinum working electrode was used for the electrolysis of hydrogen peroxide, which was the other product of the enzyme reaction, to improve sensing characteristics of the sensors. In order to improve response time, photo-crosslinkable polymer(PVA-SbQ) was used to the matrix for the enzyme immobilized membrane. The characteristics of glucose and sucrose sensors were investigated according to the variation of platinum electrode area. The response time was about $3{\sim}5$ minutes and determinations of glucose and sucrose in the range of about $30{\sim}300mg/dl$ could be possible.

백금작업전극과 광가교화된 효소고정화막을 가진 ISFET 포도당 및 자당센서가 제조되었다. 효소반응의 부산물인 과산화수소수($H_{2}O_{2}$)는 백금전극표면에서 분해되어 센서의 감지특성을 개선시키고, 광가교화 고분자(PVA-SbQ)가 효소고정화막으로 이용되어 센서의 응답시간을 단축하였다. 그리고 백금전극의 면적변화에 따라 센서의 응답크기는 증가하였다. 센서의 응답시간은 $3{\sim}5$분이었으며, $30{\sim}300mg/dl$의 포도당 및 자당농도에서 센서의 선형적인 응답을 보였다.

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