TY - GEN
T1 - Solution-based fabrication of carbon nanotube gas sensor by using dielectrophoresis and spin-columnchromatography
AU - Watanabe, Hideaki
AU - Komure, Hiroki
AU - Nakano, Michihiko
AU - Suehiroa, Junya
PY - 2013
Y1 - 2013
N2 - Single-walled carbon nanotubes (SWCNTs) gas sensor has attracted a great deal of attention because of their remarkable properties. The sensor response is attribute to the semiconducting CNT whose electronic properties depend on its chirality. The authors have previously found that the sensor response increased by using separated semiconducting SWCNTs from a mixture with metallic one. Since the electronic structure (metallic or semiconducting) of CNTs is governed by their chirality, a chirality-selective fabrication of CNT gas sensor is essential to improve their performance. In this study, we proposed chirality-based separation of semiconducting SWCNTs by using spin-column chromatography. Pristine CNT suspension was separated into three fractions that had different chiralities of semiconducting SWCNTs. Separated semiconducting CNTs of each fraction were used for fabrication of three CNT gas sensors by dielectrophoresis. Comparison of these sensor responses to NO2 revealed that sensor response depended on the chirality.
AB - Single-walled carbon nanotubes (SWCNTs) gas sensor has attracted a great deal of attention because of their remarkable properties. The sensor response is attribute to the semiconducting CNT whose electronic properties depend on its chirality. The authors have previously found that the sensor response increased by using separated semiconducting SWCNTs from a mixture with metallic one. Since the electronic structure (metallic or semiconducting) of CNTs is governed by their chirality, a chirality-selective fabrication of CNT gas sensor is essential to improve their performance. In this study, we proposed chirality-based separation of semiconducting SWCNTs by using spin-column chromatography. Pristine CNT suspension was separated into three fractions that had different chiralities of semiconducting SWCNTs. Separated semiconducting CNTs of each fraction were used for fabrication of three CNT gas sensors by dielectrophoresis. Comparison of these sensor responses to NO2 revealed that sensor response depended on the chirality.
UR - http://www.scopus.com/inward/record.url?scp=84879624974&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84879624974&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.699.915
DO - 10.4028/www.scientific.net/AMR.699.915
M3 - Conference contribution
AN - SCOPUS:84879624974
SN - 9783037856758
T3 - Advanced Materials Research
SP - 915
EP - 920
BT - Materials Science and Chemical Engineering
T2 - 2013 International Conference on Materials Science and Chemical Engineering, MSCE 2013
Y2 - 20 February 2013 through 21 February 2013
ER -