Electrical Detection of Negatively Charged Proteins Using n-Type Carbon Nanotube Field-Effect Transistor Biosensors

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概要

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• We fabricated n-type carbon nanotube field-effect transistor (CNTFET) biosensors. To prevent the single-wall carbon nanotube (SWNT)/metal contacts from adsorption of ambient molecules, SiNx passivation films were deposited on CNTFETs by catalytic chemical vapor deposition. CNTFETs with SiNx passivation films on SWNT/metal contacts, but SWNT channels are exposed to environment for sensing, exhibit n-type behavior both in air and solution. Negatively charged bovine serum albumin is successfully detected using the fabricated n-type CNTFET biosensors with SiNx passivation films. Electrical detections of both negatively and positively charged proteins are achieved using n- and p-type CNTFET biosensors, respectively.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2010-02-25

著者

• Maehashi Kenzo

  The Institute Of Scientific And Industrial Research Osaka University

• Ohno Yasuhide

  The Institute Of Scientific And Industrial Research Osaka University

• Yasuhide Ohno

  The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan

• Kazuhiko Matsumoto

  The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan

• Yasuki Yamamoto

  The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan

• Yamamoto Yasuki

  The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan

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