Performance of F-CNTs sensors towards ethanol vapor using different functional groups

Mengxing Ouyang; Wen J. Li

doi:10.1109/NEMS.2010.5592116

Performance of F-CNTs sensors towards ethanol vapor using different functional groups

Mengxing Ouyang
, Wen J. Li^*

^*Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

4 Citations (Scopus)

Abstract

Ethanol vapor sensors utilizing functionalized carbon nanotubes as sensing elements have been successfully built. The Au microelectrodes on the silicon substrate were fabricated by MEMS technology and the carbon nanotubes connection was achieved by DEP manipulation. Chemical oxidation method was used to graft functional groups such as COOH and OH on multi-walled nanotubes (MWNTs). Sensor performance using COOH-MWNTs and OH-MWNTs were compared in terms of various aspects, such as I-V curve, responsivity, sensor performance under different input current and time constant. Both sensors showed negative Temperature Coefficient of Resistance (TCR) and sharp resistance increase upon exposure to the ethanol vapor. Moreover, we observed the trends of decreased response and prolonged response time while the activation current was raised gradually. In addition, COOH-MWNTs based sensors have proved to be more sensitive towards ethanol vapor compared to OH-MWNTs. ©2010 IEEE.

Original language	English
Title of host publication	2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010
Pages	928-931
DOIs	https://doi.org/10.1109/NEMS.2010.5592116
Publication status	Published - 2010
Externally published	Yes
Event	5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (IEEE-NEMS 2010) - Xiamen, China Duration: 20 Jan 2010 → 23 Jan 2010

Conference

Conference	5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (IEEE-NEMS 2010)
Abbreviated title	IEEE-NEMS 2010
Place	China
City	Xiamen
Period	20/01/10 → 23/01/10

Research Keywords

CNTs sensors
DEP manipulation
Ethanol vapor detection
Functionalization of carbon nanotubes

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10.1109/NEMS.2010.5592116

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@inproceedings{6f7766db609e47bea5772d4e0c82d2b5,

title = "Performance of F-CNTs sensors towards ethanol vapor using different functional groups",

abstract = "Ethanol vapor sensors utilizing functionalized carbon nanotubes as sensing elements have been successfully built. The Au microelectrodes on the silicon substrate were fabricated by MEMS technology and the carbon nanotubes connection was achieved by DEP manipulation. Chemical oxidation method was used to graft functional groups such as COOH and OH on multi-walled nanotubes (MWNTs). Sensor performance using COOH-MWNTs and OH-MWNTs were compared in terms of various aspects, such as I-V curve, responsivity, sensor performance under different input current and time constant. Both sensors showed negative Temperature Coefficient of Resistance (TCR) and sharp resistance increase upon exposure to the ethanol vapor. Moreover, we observed the trends of decreased response and prolonged response time while the activation current was raised gradually. In addition, COOH-MWNTs based sensors have proved to be more sensitive towards ethanol vapor compared to OH-MWNTs. {\textcopyright}2010 IEEE.",

keywords = "CNTs sensors, DEP manipulation, Ethanol vapor detection, Functionalization of carbon nanotubes",

author = "Mengxing Ouyang and Li, \{Wen J.\}",

year = "2010",

doi = "10.1109/NEMS.2010.5592116",

language = "English",

isbn = "9781424465439",

pages = "928--931",

booktitle = "2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010",

note = "5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (IEEE-NEMS 2010), IEEE-NEMS 2010 ; Conference date: 20-01-2010 Through 23-01-2010",

}

Ouyang, M & Li, WJ 2010, Performance of F-CNTs sensors towards ethanol vapor using different functional groups. in 2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010., 5592116, pp. 928-931, 5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (IEEE-NEMS 2010), Xiamen, China, 20/01/10. https://doi.org/10.1109/NEMS.2010.5592116

Performance of F-CNTs sensors towards ethanol vapor using different functional groups. / Ouyang, Mengxing; Li, Wen J.
2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010. 2010. p. 928-931 5592116.

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Performance of F-CNTs sensors towards ethanol vapor using different functional groups

AU - Ouyang, Mengxing

AU - Li, Wen J.

PY - 2010

Y1 - 2010

N2 - Ethanol vapor sensors utilizing functionalized carbon nanotubes as sensing elements have been successfully built. The Au microelectrodes on the silicon substrate were fabricated by MEMS technology and the carbon nanotubes connection was achieved by DEP manipulation. Chemical oxidation method was used to graft functional groups such as COOH and OH on multi-walled nanotubes (MWNTs). Sensor performance using COOH-MWNTs and OH-MWNTs were compared in terms of various aspects, such as I-V curve, responsivity, sensor performance under different input current and time constant. Both sensors showed negative Temperature Coefficient of Resistance (TCR) and sharp resistance increase upon exposure to the ethanol vapor. Moreover, we observed the trends of decreased response and prolonged response time while the activation current was raised gradually. In addition, COOH-MWNTs based sensors have proved to be more sensitive towards ethanol vapor compared to OH-MWNTs. ©2010 IEEE.

AB - Ethanol vapor sensors utilizing functionalized carbon nanotubes as sensing elements have been successfully built. The Au microelectrodes on the silicon substrate were fabricated by MEMS technology and the carbon nanotubes connection was achieved by DEP manipulation. Chemical oxidation method was used to graft functional groups such as COOH and OH on multi-walled nanotubes (MWNTs). Sensor performance using COOH-MWNTs and OH-MWNTs were compared in terms of various aspects, such as I-V curve, responsivity, sensor performance under different input current and time constant. Both sensors showed negative Temperature Coefficient of Resistance (TCR) and sharp resistance increase upon exposure to the ethanol vapor. Moreover, we observed the trends of decreased response and prolonged response time while the activation current was raised gradually. In addition, COOH-MWNTs based sensors have proved to be more sensitive towards ethanol vapor compared to OH-MWNTs. ©2010 IEEE.

KW - CNTs sensors

KW - DEP manipulation

KW - Ethanol vapor detection

KW - Functionalization of carbon nanotubes

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-78649234680&origin=recordpage

U2 - 10.1109/NEMS.2010.5592116

DO - 10.1109/NEMS.2010.5592116

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 9781424465439

SP - 928

EP - 931

BT - 2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010

T2 - 5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (IEEE-NEMS 2010)

Y2 - 20 January 2010 through 23 January 2010

ER -

Performance of F-CNTs sensors towards ethanol vapor using different functional groups

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Research Keywords

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