Bacterial detection using a carbon nanotube gas sensor coupled with a microheater for ammonia synthesis by aerobic oxidisation of organic components

Junya Suehiro, N. Ikeda, A. Ohtsubo, K. Imasaka

研究成果: ジャーナルへの寄稿記事

7 引用 (Scopus)

抄録

In this study, the authors propose a new bacteria detection method using a carbon nanotube (CNT) gas sensor and a microheater, which were coupled into a Bio-MEMS (microelectromechanical systems)-type device. Bacteria were heated by the microheater in air so that ammonia (NH3) gas can be generated by the oxidation reaction of organic components of bacteria. Thus generated NH 3 gas was detected by using the CNT gas sensor, which was fabricated by dielectrophoresis (DEP) and combined with the microheater to form a small chamber. Cyclic pulsed heating operation was employed so that the CNT response to elevated temperature did not mask NH3 response. It was demonstrated that the proposed device could detect and quantify 107 bacteria cells (Escherichia coli). Possible application of DEP to trap and enrich target bacteria on the microheater was also discussed.

元の言語英語
ページ(範囲)15-22
ページ数8
ジャーナルIET Nanobiotechnology
3
発行部数2
DOI
出版物ステータス出版済み - 2009

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Carbon Nanotubes
Chemical sensors
Ammonia
Carbon nanotubes
Bacteria
Gases
Electrophoresis
MEMS
Micro-Electrical-Mechanical Systems
Equipment and Supplies
Masks
Heating
Escherichia coli
Air
Oxidation
Temperature

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Biotechnology

これを引用

Bacterial detection using a carbon nanotube gas sensor coupled with a microheater for ammonia synthesis by aerobic oxidisation of organic components. / Suehiro, Junya; Ikeda, N.; Ohtsubo, A.; Imasaka, K.

:: IET Nanobiotechnology, 巻 3, 番号 2, 2009, p. 15-22.

研究成果: ジャーナルへの寄稿記事

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