NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Study on Gas Sensitivity of Carbon Nanotube FilmsThe gas sensitivity properties of carbon nanotubes were investigated. The carbon nanotubes in this study were fabricated by hot filament chemical vapor deposition using Ni/Fe catalyst. The sensor samples were treated by chemical etching using H2SO4/HNO3. The experimental results have shown that the electrical resistance of carbon nanotubes was sensitively changed on exposure to gaseous ambient containing ethanol and water vapor. It was found that the gas sensitivity of carbon nanotubes was greatly enhanced after chemical treatment. It was also shown that the response time of nanotube sensor was faster than that of usual sensors.
Document ID
20030068605
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
W L Wang (Chongqing University Chongqing, China)
Y Ma (Chongqing University Chongqing, China)
K J Liao (Chongqing University Chongqing, China)
Z H Wu (Chongqing University Chongqing, China)
G B Liu (Chongqing University Chongqing, China)
B Y Wan (Chongqing University Chongqing, China)
Date Acquired
August 21, 2013
Publication Date
August 1, 2003
Publication Information
Publication: Proceedings of the Seventh Applied Diamond Conference/Third Frontier Carbon Technology Joint Conference
Publisher: National Aeronautics and Space Administration
Subject Category
Mechanical Engineering
Report/Patent Number
NASA/CP-2003-212319
Meeting Information
Meeting: 3rd Frontier Carbon Technology (FCT) Joint Conference
Location: Tsukuba
Country: JP
Start Date: August 18, 2003
End Date: August 21, 2003
Sponsors: Nippon Institute of Technology, National Institute of Advanced Industrial Science and Technology, Glenn Research Center
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
CVD
ethanol
water vapor
chemical treatment
gas sensitivity
carbon nanotubes
Document Inquiry

Available Downloads

There are no available downloads for this record.

Related Records

IDRelationTitle20030068525Collected WorksProceedings of the Seventh Applied Diamond Conference/Third Frontier Carbon Technology Joint Conference (ADC/FCT 2003)
No Preview Available