Electrical transport through poly(G)-poly(C) DNA molecules

J. S. Hwang, G. S. Lee, K. J. Kong, D. J. Ahn, S. W. Hwang, D. Ahn

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We report the details of the direct electrical transport through 60 base pairs of poly(G)-poly(C) DNA molecules between two electrodes with nanometer spacings. An almost monotonic increase in the current is observed from the sample with the gap of 30 μm and with a DNA solution droplet. The I-V and the dI/dV-V measured from various samples with the electrode gap ranging from 20 to 100 nm at different conditions show reproducible clear staircases. The average gap value of the observed staircases is consistent with the energy gap obtained from a tight binding calculation.

Original languageEnglish
Pages (from-to)161-165
Number of pages5
JournalMicroelectronic Engineering
Volume63
Issue number1-3
DOIs
Publication statusPublished - 2002 Aug

Bibliographical note

Funding Information:
This work is supported by the Korean Ministry of Science and Technology through the Creative Research Initiatives Program under Contract No. 00-C-CT-01-C-35. The work at Korea University is supported by the Brain Korea 21 project in 2002.

Keywords

  • DNA
  • Electrical transport
  • Molecule
  • Voltage gap

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering

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