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Gas sensors have been fabricated from multiwalled carbon nanotubes (MWNTs) coated with a thin tin oxide layer, and have been used to detect oxidizing and reducing gases down to a ppm level. The barriers between the tin oxide nanocrystal grains on the MWNTs dominate the sensor resistance in different gases, and the conducting carriers in the MWNTs have a low resistance, which make the resistance of the sensors much lower than that of
Published in:
Applied Physics Letters
(Volume:85
,
Issue:
4
)
Date of Publication: Jul 2004
- Page(s):
- 666 - 668
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.1775879
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 18 June 2009
- Issue Date :
- Jul 2004
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