Chemical modification of carbon nanotube based bio-nanosensor by plasma activation

Takamichi Hirata, Shoji Amiya, Masahiro Akiya, Osamu Takei, Takafumi Sakai, Takahisa Nakamura, Junko Kawamura-Tsuzuku, Tadashi Yamamoto, Rikizo Hatakeyama

研究成果: Article査読

13 被引用数 (Scopus)

抄録

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).

本文言語English
ページ(範囲)2068-2071
ページ数4
ジャーナルJapanese journal of applied physics
47
4 PART 1
DOI
出版ステータスPublished - 2008 4 18

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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