Jung Sehun, Choi Jaeboong, Kim Youngjin, Lee Jongchul, Chang Yongmoo, Baik Seunghyun
School of Mechanical Engineering, Sungkyunkwan University, Suwon 440-746, Korea.
J Nanosci Nanotechnol. 2009 Dec;9(12):7336-9. doi: 10.1166/jnn.2009.1777.
We proposed to use a miniature single-walled carbon nanotube (SWNT) sensor, fabricated by alternating current dielectrophoresis, to detect dissociated and oxidized sulfur hexafluoride (SF6) gas species generated by partial discharge (PD) activity in a concealed chamber such as gas-insulated switchgear (GIS). The SWNT sensor did not react with pure SF6 gas but sensitively responded to the dissociated and oxidized SF6 species. Also, the SWNT sensor could be regenerated by purging with fresh air since the transduction was based on the physisorption of analytes. Therefore, the SWNT sensor is a promising device for the detection of the dissociated and oxidized SF6 species and for the monitoring of the PD activity inside GIS.
我们提议使用一种通过交流电介电泳制造的微型单壁碳纳米管（SWNT）传感器，来检测在诸如气体绝缘开关设备（GIS）等封闭腔室内由局部放电（PD）活动产生的离解和氧化的六氟化硫（SF6）气体种类。该SWNT传感器不与纯SF6气体发生反应，但对离解和氧化的SF6种类有灵敏响应。此外，由于传感转换基于分析物的物理吸附，因此通过用新鲜空气吹扫可使SWNT传感器再生。所以，SWNT传感器是一种有前景的装置，可用于检测离解和氧化的SF6种类以及监测GIS内部的局部放电活动。
