Microwave Based Ammonia Detection with Vertically Aligned Carbon Nanotube Arrays

被引：7
作者：
McGrath, Mark [1 ]
Pham, Anh-Vu H. [1 ]
机构：
[1] Univ Calif Davis, Dept Elect & Comp Engn, Davis, CA 95616 USA
来源：
SENSOR LETTERS | 2008年 / 6卷 / 05期
基金：
美国国家科学基金会;
关键词：
Vertically Aligned Carbon Nanotubes; Sensor; Wireless and Ammonia;
D O I：
10.1166/sl.2008.m142
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
We present the results of a microwave based sensor with a vertically grown multi-walled nanotube array as sensing materials. The sensitivity is measured to be -2.5 KHz/ppm for ammonia concentrations of 1000 ppm in an ambient environment. The frequency shift mechanism is explained.
引用
收藏
页码：719 / 722
页数：4
相关论文
共 23 条
  • [1] Nanotube-based gas sensors - Role of structural defects
    Andzelm, J
    Govind, N
    Maiti, A
    [J]. CHEMICAL PHYSICS LETTERS, 2006, 421 (1-3) : 58 - 62
  • [2] Binding of NH3 to graphite and to a (9,0) carbon nanotube -: art. no. 115409
    Bauschlicher, CW
    Ricca, A
    [J]. PHYSICAL REVIEW B, 2004, 70 (11) : 115409 - 1
  • [3] Charge transfer from ammonia physisorbed on nanotubes -: art. no. 218301
    Bradley, K
    Gabriel, JCP
    Briman, M
    Star, A
    Grüner, G
    [J]. PHYSICAL REVIEW LETTERS, 2003, 91 (21) : 1 - 218301
  • [4] Adsorption of NH3 and NO2 molecules on carbon nanotubes
    Chang, H
    Lee, JD
    Lee, SM
    Lee, YH
    [J]. APPLIED PHYSICS LETTERS, 2001, 79 (23) : 3863 - 3865
  • [5] Carbon-nanotube-based resonant-circuit sensor for ammonia
    Chopra, S
    Pham, A
    Gaillard, J
    Parker, A
    Rao, AM
    [J]. APPLIED PHYSICS LETTERS, 2002, 80 (24) : 4632 - 4634
  • [6] Multi-walled carbon nanotubes experiencing electrical breakdown as gas sensors
    Chung, JY
    Lee, KH
    Lee, J
    Troya, D
    Schatz, GC
    [J]. NANOTECHNOLOGY, 2004, 15 (11) : 1596 - 1602
  • [7] COLLIN RE, 2001, FDN MICROWAVE ENG, P497
  • [8] Extreme oxygen sensitivity of electronic properties of carbon nanotubes
    Collins, PG
    Bradley, K
    Ishigami, M
    Zettl, A
    [J]. SCIENCE, 2000, 287 (5459) : 1801 - 1804
  • [9] Sensitivity of ammonia interaction with single-walled carbon nanotube bundles to the presence of defect sites and functionalities
    Feng, X
    Irle, S
    Witek, H
    Morokuma, K
    Vidic, R
    Borguet, E
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (30) : 10533 - 10538
  • [10] Oxygen adsorption on graphite and nanotubes
    Giannozzi, P
    Car, R
    Scoles, G
    [J]. JOURNAL OF CHEMICAL PHYSICS, 2003, 118 (03) : 1003 - 1006
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