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Vol. 34, No. 8(3), S&M3042

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Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
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Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
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Sensors and Materials, Volume 21, Number 7 (2009)
Copyright(C) MYU K.K.
pp. 331-338
S&M773 Review Paper of Special Issue
https://doi.org/10.18494/SAM.2009.604
Published: October 22, 2009

Suspended Single-Wall Carbon Nanotubes as a Sensor of Molecular Adsorption [PDF]

Yoshikazu Homma, Tateki Hanashima and Shohei Chiashi

(Received July 27, 2009; Accepted July 30, 2009)

Keywords: carbon nanotubes, photoluminescence, environmental effect, adsorption, desorption

All the carbon atoms of a single-wall carbon nanotube (SWNT) are in the surface layer. Thus, SWNTs suffer from strong interaction with the surrounding environment. When an SWNT is suspended between mesa structures, the interactions with the substrate and other nanotubes are minimized, and the nanotube is directly exposed to ambient gas. Semiconducting SWNTs suspended in space exhibit intense photoluminescence, and their optical transition energy depends on the state of molecules absorbed onto the SWNT surface. Therefore, gas molecule adsorption/desorption can be probed by photoluminescence analysis.

Corresponding author: Yoshikazu Homma


Cite this article
Yoshikazu Homma, Tateki Hanashima and Shohei Chiashi, Suspended Single-Wall Carbon Nanotubes as a Sensor of Molecular Adsorption, Sens. Mater., Vol. 21, No. 7, 2009, p. 331-338.



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