Differentiation of gas molecules using flexible and all-carbon nanotube devices

Dongliang Fu; Hueiling Lim; Yumeng Shi; Xiaochen Dong; S. G. Mhaisalkar; Yuan Chen; Shabbir Moochhala; Lain Jong Li

doi:10.1021/jp710362r

Differentiation of gas molecules using flexible and all-carbon nanotube devices

Dongliang Fu, Hueiling Lim, Yumeng Shi, Xiaochen Dong, S. G. Mhaisalkar, Yuan Chen, Shabbir Moochhala, Lain Jong Li^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

81 Scopus citations

Abstract

Carbon nanotubes (CNTs) are extremely sensitive to the electronic perturbations from environmental gases. However, the electrical detection of carbon monoxide (CO) is still a challenge. Here we show that 1 ppm of CO can be electrically detected at room temperature using a CNT resistor and the detection is proposed related to the sidewall functionalities (COOH). A simple all-CNT electronic nose composed of two resistors (or one resistor plus one transistor) is able to differentiate CO and other oxidative gases (for example NO and NO₂). The electronic nose is working on both conventional SiO ₂/Si and flexible substrates.

Original language	English (US)
Pages (from-to)	650-653
Number of pages	4
Journal	JOURNAL OF PHYSICAL CHEMISTRY C
Volume	112
Issue number	3
DOIs	https://doi.org/10.1021/jp710362r
State	Published - Jan 24 2008
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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10.1021/jp710362r

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abstract = "Carbon nanotubes (CNTs) are extremely sensitive to the electronic perturbations from environmental gases. However, the electrical detection of carbon monoxide (CO) is still a challenge. Here we show that 1 ppm of CO can be electrically detected at room temperature using a CNT resistor and the detection is proposed related to the sidewall functionalities (COOH). A simple all-CNT electronic nose composed of two resistors (or one resistor plus one transistor) is able to differentiate CO and other oxidative gases (for example NO and NO2). The electronic nose is working on both conventional SiO 2/Si and flexible substrates.",

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AU - Fu, Dongliang

AU - Lim, Hueiling

AU - Shi, Yumeng

AU - Dong, Xiaochen

AU - Mhaisalkar, S. G.

AU - Chen, Yuan

AU - Moochhala, Shabbir

AU - Li, Lain Jong

PY - 2008/1/24

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AB - Carbon nanotubes (CNTs) are extremely sensitive to the electronic perturbations from environmental gases. However, the electrical detection of carbon monoxide (CO) is still a challenge. Here we show that 1 ppm of CO can be electrically detected at room temperature using a CNT resistor and the detection is proposed related to the sidewall functionalities (COOH). A simple all-CNT electronic nose composed of two resistors (or one resistor plus one transistor) is able to differentiate CO and other oxidative gases (for example NO and NO2). The electronic nose is working on both conventional SiO 2/Si and flexible substrates.

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Differentiation of gas molecules using flexible and all-carbon nanotube devices

Abstract

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