센서학회지 (Journal of Sensor Science and Technology)

  • 제27권2호
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  • Pages.132-136
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  • 2018
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  • 1225-5475(pISSN)
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  • 2093-7563(eISSN)
한국센서학회 (The Korean Sensors Society)
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상온감지 가능한 탄소나노튜브 방적사 기반의 수소 감지 센서

Room Temperature Hydrogen Gas Sensor Based on Carbon Nanotube Yarn

  • 김재건 (한국생산기술연구원, 항공시스템기술그룹) ;
  • 이준엽 (한국생산기술연구원, 항공시스템기술그룹) ;
  • 공성호 (경북대학교 전자공학부) ;
  • 정대웅 (한국생산기술연구원, 항공시스템기술그룹)
  • Kim, Jae Keon (Aircraft System Technology Group, Korea Institute of Industrial Technology) ;
  • Lee, Junyeop (Aircraft System Technology Group, Korea Institute of Industrial Technology) ;
  • Kong, Seong Ho (School of Electrical Engineering, Kyungpook National Unversity) ;
  • Jung, Daewoong (Aircraft System Technology Group, Korea Institute of Industrial Technology)
  • 투고 : 2018.03.16
  • 심사 : 2018.03.28
  • 발행 : 2018.03.31
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초록

We report the development of a room-temperature hydrogen ($H_2$) gas sensor based on carbon nanotubes (CNT) yarn. To detect $H_2$ gas in room temperature, a highly ordered CNT yarn was placed on a substrate from a spin-capable CNT forest, followed by the deposition of a platinum (Pt) layer on surface of the CNT yarn. To examine the effect of the Pt-layer on the response of the CNT sensor, a comparative sensing performance was characterized on both the Pt deposited and non-deposited CNT yarn at room temperature. The Pt-CNT yarn yielded high response, whereas the non-deposited CNT yarn showed negligible response for $H_2$ detection at room temperature. Pt is a reliable and efficient catalyst that can substantially improve the detection of $H_2$ gas by chemical sensitization via a "spillover" effect. It can be efficiently utilized to increase the sensitivity and selectivity as well as to obtain fast response and recovery times.

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참고문헌

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