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A pH sensor based on electric properties of nanotubes on a glass substrate

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タイトル: A pH sensor based on electric properties of nanotubes on a glass substrate
著者: Takeda, Seiji 著作を一覧する
Nakamura, Motonori 著作を一覧する
Ishii, Atsushi 著作を一覧する
Subagyo, Agus 著作を一覧する
Hosoi, Hirotaka 著作を一覧する
Sueoka, Kazuhisa 著作を一覧する
Mukasa, Koichi 著作を一覧する
キーワード: carbon nanotube
field effect transistor
発行日: 2007年 4月
出版者: Springer
誌名: Nanoscale Research Letters
巻: 2
号: 4
開始ページ: 207
終了ページ: 212
出版社 DOI: 10.1007/s11671-007-9053-9
抄録: We fabricated a pH-sensitive device on a glass substrate based on properties of carbon nanotubes. Nanotubes were immobilized specifically on chemically modified areas on a substrate followed by deposition of metallic source and drain electrodes on the area. Some nanotubes connected the source and drain electrodes. A top gate electrode was fabricated on an insulating layer of silane coupling agent on the nanotube. The device showed properties of an n-type field effect transistor when a potential was applied to the nanotube from the top gate electrode. Before fabrication of the insulating layer, the device showed that the p-type field effect transistor and the current through the source and drain electrodes depend on the buffer pH. The current increases with decreasing pH of the CNT solution. This device, which can detect pH, is applicable for use as a biosensor through modification of the CNT surface.
Rights: The original publication is available at
Relation (URI):
資料タイプ: article (author version)
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 武田 晴治


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