Carbon nanotube-based biosensor for detection hepatitis B

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

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


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
Issue number4 SUPPL.
Publication statusPublished - 2009 Jul

Bibliographical note

Funding Information:
This work has been financially supported by Korea Science and Engineering Foundation through National Core Research Center for Nanomedical Technology (Grant No. R15-20040924-00000-0).

All Science Journal Classification (ASJC) codes

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


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