Solution-based fabrication of carbon nanotube gas sensor by using dielectrophoresis and spin-columnchromatography

Hideaki Watanabe, Hiroki Komure, Michihiko Nakano, Junya Suehiroa

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

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.

本文言語英語
ホスト出版物のタイトルMaterials Science and Chemical Engineering
ページ915-920
ページ数6
DOI
出版ステータス出版済み - 2013
イベント2013 International Conference on Materials Science and Chemical Engineering, MSCE 2013 - , シンガポール
継続期間: 2 20 20132 21 2013

出版物シリーズ

名前Advanced Materials Research
699
ISSN(印刷版)1022-6680

その他

その他2013 International Conference on Materials Science and Chemical Engineering, MSCE 2013
Countryシンガポール
Period2/20/132/21/13

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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