Understanding the scattering mechanism of single-walled carbon nanotube based gas sensors

In the interaction between gas molecules with single-walled carbon nanotube (SWCNT) we show that as a result of collisions the gas scattering contributes with an important background signal and should be considered in SWCNT-based gas sensors. Experimental evidence of the collision-induced tube wall...

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Bibliographic Details
Published in:Carbon (New York) 2010-06, Vol.48 (7), p.1970-1976
Main Authors: Zhong, Jun, Guo, Jinghua, Gao, Bin, Chiou, Jau-Wern, Li, Jiong, Chu, Wangsheng, Pong, Way-Faung, Chang, Chinglin, Luo, Yi, Wu, Ziyu
Format: Article
Language:English
Subjects:
ADSORPTION
BUNDLES
Carbon
CHEMICAL SENSORS
Collisions
FINE-STRUCTURE
Gas sensors
INTERCALATED GRAPHITE
PHOTOEMISSION
Scattering
SENSITIVITY
Single wall carbon nanotubes
SPECTROSCOPY
TECHNOLOGY
TEKNIKVETENSKAP
Tubes (electronic)
Walls
X-RAY-ABSORPTION
X-rays
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Summary:In the interaction between gas molecules with single-walled carbon nanotube (SWCNT) we show that as a result of collisions the gas scattering contributes with an important background signal and should be considered in SWCNT-based gas sensors. Experimental evidence of the collision-induced tube wall deformation is demonstrated using in situ X-ray absorption near-edge structure spectroscopy. Results support the occurrence of the scattering process and show how gas collisions may affect the electronic structure of SWCNTs.
ISSN:0008-6223
1873-3891
1873-3891
DOI:10.1016/j.carbon.2010.02.003