산화질소 검출용 마이크로 가스센서 제조공정
(주)코리아스칼라
- 최초 등록일
- 2016.04.02
- 최종 저작일
- 2013.06
- 5페이지/ 어도비 PDF
- 가격 4,000원
* 본 문서는 배포용으로 복사 및 편집이 불가합니다.
서지정보
ㆍ발행기관 : 한국재료학회
ㆍ수록지정보 : 한국재료학회지 / 23권 / 6호
ㆍ저자명 : 김정식, 윤진호, 김범준
영어 초록
In this study, a micro gas sensor for NOx was fabricated using a microelectromechanical system (MEMS) technology and sol-gel process. The membrane and micro heater of the sensor platform were fabricated by a standard MEMS and CMOS technology with minor changes. The sensing electrode and micro heater were designed to have a co-planar structure with a Pt thin film layer. The size of the gas sensor device was about 2mm×2mm. Indium oxide as a sensing material for the NOx gas was synthesized by a sol-gel process. The particle size of synthesized In2O3 was identified as about 50 nm by field emission scanning electron microscopy (FE-SEM). The maximum gas sensitivity of indium oxide, as measured in terms of the relative resistance (Rs=Rgas/Rair), occurred at 300˚C with a value of 8.0 at 1 ppm NO2 gas. The response and recovery times were within 60 seconds and 2 min, respectively. The sensing properties of the NO2 gas showed good linear behavior with an increase of gas concentration. This study confirms that a MEMS-based gas sensor is a potential candidate as an automobile gas sensor with many advantages: small dimension, high sensitivity, short response time and low power consumption.
참고 자료
없음
"한국재료학회지"의 다른 논문
더보기 (3/8)