Carbon nanotube-based biosensor for detection hepatitis B

Jeseung Oh, Seunghwan Yoo, Young Wook Chang, Kookjin Lim, Kyung Hwa Yoo

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13 Citations (Scopus)

Abstract

We have fabricated carbon nanotube (CNT)-based biosensor with a field-effect transistor structure for detection of hepatitis B. For real-time measurement, a microfluidic channel was mounted on the device and the presence of hepatitis B antigen was detected by measuring the electrical conductance as a function of time. When hepatitis B antigen was exposed to the CNT biosensor with hepatitis B antibody immobilized, the conductance increased and then became nearly constant within 10 min. As the antigen concentration increases, the conductance increased further. These results demonstrate that hepatitis B is possibly detected in real-time using the CNT biosensor.

Original languageEnglish
Pages (from-to)e229-e231
JournalCurrent Applied Physics
Volume9
Issue number4 SUPPL.
DOIs
Publication statusPublished - 2009 Jul 1

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physics and Astronomy(all)

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