Nickel oxide(NiO) thin films, nanorods, and carbon nanotube(CNT)/NiO core-shell nanorod structures are fabricated by sputtering Nickel at different deposition time on alumina substrates or single wall carbon nanotube templates followed by oxidation treatments at different temperatures, 400 and 700 oC. Structural analyses are carried out by scanning electron microscopy and x-ray diffraction. NiO thinfilm, nanorod and CNT/NiO core-shell nanorod structurals of the gas sensor structures are tested for detection of H2S gas. The NiO structures exhibit the highest response at 200 oC and high selectivity to H2S among other gases of NO, NH3, H2, CO, etc. The nanorod structures have a higher sensing performance than the thin films and carbon nanotube/NiO core-shell structures. The gold catalyst deposited on NiO nanorods further improve the sensing performance, particularly the recovery kinetics.

Abstract
 1. 서 론
 2. 실험방법
  2.1 센서 구조의 제작
  2.2 센서 감지 특성 측정 분석
 3. 결과 및 고찰
  3.1 탄소나노튜브 형틀 제작 조건 실험
  3.2 산화니켈의 황화수소 가스 감지 특성
  3.3 금 촉매의 황화수소 가스 감지 특성에 미치는 영향 조사
 4. 결 론
 References

• 양하늘(충남대학교 신소재공학과) | Haneul Yang (Department of Materials Science and Engineering, Chungnam National University)
• Ngyuen Duc Chinh(충남대학교 신소재공학과)
• Ngyuen Minh Hieu(충남대학교 신소재공학과)
• 박지환(충남대학교 신소재공학과) | Jihwan Park (Department of Materials Science and Engineering, Chungnam National University)
• 홍순현(충남대학교 신소재공학과) | Soonhyun Hong (Department of Materials Science and Engineering, Chungnam National University)
• 윤홍관(충남대학교 신소재공학과) | Hongkwan yun (Department of Materials Science and Engineering, Chungnam National University)
• 김천중(충남대학교 신소재공학과) | Chunjoong Kim (Department of Materials Science and Engineering, Chungnam National University)
• 김도진(충남대학교 신소재공학과) | Dojin Kim (Department of Materials Science and Engineering, Chungnam National University) Corresponding author