Chemical Modification of Carbon Nanotube Based Bio-Nanosensor by Plasma Activation
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概要
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Chemical modification with plasma ion irradiation (plasma activation) is demonstrated on a bio-nanosensor based on poly(ethylene glycol)-grafted single-walled carbon nanotubes (PEG-SWNTs). By X-ray photoelectron spectroscopy (XPS) analysis, peaks that correspond to CO and COOH radicals are observed. In addition, the evaluation of the characteristic responses of the bio-nanosensor using a bovine serum albumin (BSA) antigen or oligonucleotide reveals an increase in impedance due to an antigen–antibody reaction or oligonucleotide hybridization. From these results, the bio-nanosensor is found to react with a short response time (60 s).
- 2008-04-25
著者
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Sakai Takafumi
Division Of Applied Life Sciences Graduate School Of Agriculture Kyoto University
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Hatakeyama Rikizo
Department Of Electronic Engineering Tohoku University
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Nakamura Takahisa
Division Of Oncology Department Of Cancer Biology Institute Of Medical Science University Of Tokyo
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Yamamoto Tadashi
Division Of Oncology Institute Of Medical Science Univ Of Tokyo
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Akiya Masahiro
Department of Biomedical Engineering, Musashi Institute of Technology, Tokyo 158-8557, Japan
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Takei Osamu
Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan
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Sakai Takafumi
Division of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan
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Nakamura Takahisa
Division of Oncology, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
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Hirata Takamichi
Department of Biomedical Engineering, Musashi Institute of Technology, Tokyo 158-8557, Japan
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Amiya Shoji
Department of Biomedical Engineering, Musashi Institute of Technology, Tokyo 158-8557, Japan
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Kawamura-Tsuzuku Junko
Division of Oncology, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan
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