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Fabrication of single-walled carbon nanotube-based highly sensitive gas sensors
Xu K(许可); Tian XJ(田孝军); Wu CD(吴成东); Liu J(刘剑); Li MX(李孟歆); Sun, Ying; Wei FN(魏发南)
作者部门机器人学研究室
关键词Adsorption Automobile Manufacture Electric Field Effects Field Effect Transistors Gas Detectors Microelectrodes Scanning Electron Microscopy Single-walled Carbon Nanotubes (Swcn) Ultraviolet Radiation
发表期刊Science China Technological Sciences
ISSN1674-7321
2013
卷号56期号:1页码:32-35
收录类别SCI ; EI
EI收录号20130415939836
WOS记录号WOS:000314375300006
产权排序1
摘要A highly sensitive single-walled carbon nanotube (SWCNT)-based ammonia (NH3) gas detector is manufactured by orderly assembling SWCNT using the dielectrophoretical (DEP) technology. Atom force microscopy (AFM) and scanning electron microscopy (SEM) images revealed that SWCNTs were assembled between the microelectrodes. SWCNTs were affected by the electrophoretic force which was carried out by the related theoretical analysis in a nonuniform electric field. The SWCNT field effect transistors geometry was obtained. The electrical performance of NH3 gas sensor with the SWCNT field effect transistors geometry was tested before and after the adoption of NH3 at room temperature. Experimental results indicated that the efficient assembly of SWCNT was obtained by the applied alternating current voltage with frequency of 2 MHz and amplitude of 10 V. The SWCNTs-based gas sensor had high sensitivity to NH3, and the electrical conductance of NH3 gas sensor reduced two times after interaction with NH3. The SWCNTs surface gas molecules were removed by means of ultraviolet ray irradiation for 10 min. Hence, the fabricated NH3 gas sensor could be reversible. There is a clear evidence that the adsorption of NH3 on the SWCNT channel is easy to be realized. Our theoretical results are consistent with recent experiments. © 2012 Science China Press and Springer-Verlag Berlin Heidelberg.; Number of references:11
语种英语
WOS标题词Science & Technology ; Technology
WOS类目Engineering, Multidisciplinary ; Materials Science, Multidisciplinary
WOS研究方向Engineering ; Materials Science
引用统计
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sia.cn/handle/173321/10352
专题机器人学研究室
通讯作者Tian XJ(田孝军)
作者单位1.School of Information and Control Engineering, Shenyang Jianzhu University, Shenyang 110168, China
2.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
3.School of Information Science and Engineering, Northeastern University, Shenyang 110004, China
推荐引用方式
GB/T 7714
Xu K,Tian XJ,Wu CD,et al. Fabrication of single-walled carbon nanotube-based highly sensitive gas sensors[J]. Science China Technological Sciences,2013,56(1):32-35.
APA Xu K.,Tian XJ.,Wu CD.,Liu J.,Li MX.,...&Wei FN.(2013).Fabrication of single-walled carbon nanotube-based highly sensitive gas sensors.Science China Technological Sciences,56(1),32-35.
MLA Xu K,et al."Fabrication of single-walled carbon nanotube-based highly sensitive gas sensors".Science China Technological Sciences 56.1(2013):32-35.
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