Biosensors based on carbon nanotube resonators

POSTER

Abstract

We have developed biosensors based on carbon nanotubes (CNT) utilizing the resonance frequency measurements. The CNTs, which was attached to a resonant LC impedance-matching circuit whose resonance frequency was about 12GHz, have exhibited the resonance frequency of about 14GHz. However, when biotin molecules were attached on the CNT surface modified with linker and streptavidin, the resonance frequency was shifted to the lower frequency. For comparison, we have carried out similar measurements using as resonator without CNT, but found no resonance frequency shift. Possible origins of resonance frequency shift after attaching biotin on the CNT surface are discussed.

*This work is supported by National Core Research Center for Nanomedical Technology ( Grant R15-2004-024-00000-0 )

Authors

  • Hyun Seok Lee

    • Dept. of Physic

  • Hee-Jo Lee

    • Dept. of Electrical and Electronic Engineering

  • Kyung-Hwa Yoo

    • Department of Physics
    • Dept. of Physics and National Core Research Center for Nanomedical Technology, Yonsei Univ.
    • Department of Physics, Yonsei University
    • Dept. of Physics and National Core Research Center for Nanomedical Technologyl, Yonsei University
    • Dept. of Physic
    • Dept. of Physics and National Core Research Center for Nanomedical Technology, Yonsei University

  • Jong Gwan Yook

    • Dept. of Electrical and Electronic Engineering

  • Hui Yul Park

    • National Core Research Center