标题: | A Single-Walled Carbon Nanotube Network Gas Sensing Device |
作者: | Wang, Li-Chun Tang, Kea-Tiong Teng, I-Ju Kuo, Cheng-Tzu Ho, Cheng-Long Kuo, Han-Wen Su, Tseng-Hsiung Yang, Shang-Ren Shi, Gia-Nan Chang, Chang-Ping 材料科学与工程学系 Department of Materials Science and Engineering |
关键字: | single-walled carbon nanotube (SWCNT) networks;gas sensing device;chemical vapors |
公开日期: | 1-八月-2011 |
摘要: | The goal of this research was to develop a chemical gas sensing device based on single-walled carbon nanotube (SWCNT) networks. The SWCNT networks are synthesized on Al(2)O(3)-deposted SiO(2)/Si substrates with 10 nm-thick Fe as the catalyst precursor layer using microwave plasma chemical vapor deposition (MPCVD). The development of interconnected SWCNT networks can be exploited to recognize the identities of different chemical gases by the strength of their particular surface adsorptive and desorptive responses to various types of chemical vapors. The physical responses on the surface of the SWCNT networks cause superficial changes in the electric charge that can be converted into electronic signals for identification. In this study, we tested NO(2) and NH(3) vapors at ppm levels at room temperature with our self-made gas sensing device, which was able to obtain responses to sensitivity changes with a concentration of 10 ppm for NO(2) and 24 ppm for NH(3). |
URI: | http://dx.doi.org/10.3390/s110807763 http://hdl.handle.net/11536/20682 |
ISSN: | 1424-8220 |
DOI: | 10.3390/s110807763 |
期刊: | SENSORS |
Volume: | 11 |
Issue: | 8 |
起始页: | 7763 |
结束页: | 7772 |
显示于类别: | Articles |
文件中的档案:
If it is a zip file, please download the file and unzip it, then open index.html in a browser to view the full text content.