| 학회 |
한국화학공학회 |
| 학술대회 |
2009년 봄 (04/23 ~ 04/24, 광주 김대중컨벤션센터) |
| 권호 |
15권 1호, p.1191 |
| 발표분야 |
나노공정 및 나노소자기술(이홍희 교수 은퇴기념) |
| 제목 |
Hydrogen safety sensors using palladium nanowire array |
| 초록 |
Very sensitive hydrogen sensor is fabricated using palladium(Pd) nanowires electroplated using anodized alumina template. Mechanism for detecting hydrogen concentration is different from conventional hydrogen sensors using Pd. The Pd nanowires have a diameter of about 80nm and the spacing between the wires is about 10nm. Upon diluted hydrogen environment, the wires become swollen as a result of hydrogen dissolution and as the result the resistance decreases due to the closer gap between the wires. In case of Pd thin film sensor, the resistance through the film increases as the hydrogen concentration increases. Even though a Pd nanowire sensor has been reported by Penner group (Science, 2001), the sensor has a different sensing mechanism of joining nanocrystallites being composed of Pd nanowires and the lower limit of hydrogen concentration is about 1%. The sensor fabricated in this study shows faster response time and can detect as low as 0.1% hydrogen concentration. |
| 저자 |
조성민 |
| 소속 |
성균관대 |
| 키워드 |
Hydrogen safety sensors; palladium nanowire
|
| E-Mail |
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| VOD |
VOD 보기 |
| 원문파일 |
초록 보기 |
