Carbon-nanotube-resonator-based biosensors

Hyun Seok Lee, Hee Jo Lee, Hyang Hee Choi, Jong Gwan Yook, Kyung-hwa Yoo

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A study was conducted to demonstrate carbon nanotube (CNT) resonator-based biosensors, using the biotin-streptavidin system. The CNT resonators were fabricated by connecting the interdigital capacitor to the CNT in parallel. It was found that these CNT resonators exhibited a clear resonance at approximately 10-13 GHz, depending on the device. The resonator frequency was lowered by approximately 0.7-1.3 GHz and the Q factor was enhanced, after the streptavidin was bound to the biotinylated CNT. The resonance frequency shift and the enhanced Q factor were explained by the increase in CCNT and R f, according to the simulation results. The resonance frequency measurements and their sensitivity was not reduced for devices with metallic and semiconducting CNTs, as the CNT resonator-based biosensors can detect biomolecules by measuring the capacitance change through the resonance frequency measurements.

Original languageEnglish
Pages (from-to)1723-1727
Number of pages5
JournalSmall
Volume4
Issue number10
DOIs
Publication statusPublished - 2008 Oct 1

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Carbon Nanotubes
Biosensing Techniques
Biosensors
Resonators
Carbon nanotubes
Streptavidin
Equipment and Supplies
Biomolecules
Biotin
Capacitors
Capacitance

All Science Journal Classification (ASJC) codes

  • Biomaterials
  • Engineering (miscellaneous)
  • Biotechnology
  • Medicine(all)

Cite this

Lee, Hyun Seok ; Lee, Hee Jo ; Choi, Hyang Hee ; Yook, Jong Gwan ; Yoo, Kyung-hwa. / Carbon-nanotube-resonator-based biosensors. In: Small. 2008 ; Vol. 4, No. 10. pp. 1723-1727.
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Lee, HS, Lee, HJ, Choi, HH, Yook, JG & Yoo, K 2008, 'Carbon-nanotube-resonator-based biosensors', Small, vol. 4, no. 10, pp. 1723-1727. https://doi.org/10.1002/smll.200800382

Carbon-nanotube-resonator-based biosensors. / Lee, Hyun Seok; Lee, Hee Jo; Choi, Hyang Hee; Yook, Jong Gwan; Yoo, Kyung-hwa.

In: Small, Vol. 4, No. 10, 01.10.2008, p. 1723-1727.

Research output: Contribution to journalArticle

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