센서학회지 (Journal of Sensor Science and Technology)

  • 제15권2호
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  • Pages.127-133
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  • 2006
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  • 1225-5475(pISSN)
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  • 2093-7563(eISSN)
한국센서학회 (The Korean Sensors Society)
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초정밀 스프레이 방법을 이용한 단일벽 탄소나노튜브 pH센서 개발

Development of single walled-carbon nanotubes based pH sensor using ultra-precision spray method

  • 권재홍 (고려대학교 공과대학 전자.전기공학과) ;
  • 이경수 (고려대학교 이과대학 물리학과) ;
  • 이윤희 (고려대학교 이과대학 물리학과) ;
  • 주병권 (고려대학교 공과대학 전자.전기공학과)
  • Kwon, Jae-Hong (School of Electrical Engineering, College of Engineering, Korea University) ;
  • Lee, Kyong-Soo (College of Science, Department of Physics, Korea University) ;
  • Lee, Yun-Hi (College of Science, Department of Physics, Korea University) ;
  • Ju, Byeong-Kwon (School of Electrical Engineering, College of Engineering, Korea University)
  • 발행 : 2006.03.31
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초록

Recent studies demonstrated the ability of carbon nanotube (CNT) to promote electron transfer reactions of important compounds and to impart higher stability onto electrochemical sensors. CNT-based sensors measured by hydroxyl radical concentration or pH value suggest great promise for biosensors. This paper describes a new method for fabricating a very simple and inexpensive pH sensor compose of single walled-carbon nanotubes (SW-CNTs) using an ultra-precision spray. CNT-based sensor shows pH sensitivity in buffer solution at different pH range. Our experimental results show the sensor responses to pH buffer solution and the conductance of depends on the pH values. These results support application possibility of SW-CNTs based pH sensor for mass production.

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