Electrical conduction measurement of thiol modified DNA molecules

J. S. Hwang, S. W. Hwang, D. Ahn

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

We present a novel transport measurement of 60 base pairs of poly(dG)-poly(dC) DNA molecules. Thiol-terminated DNA molecules are chemically anchored at the surface of a Au nanoparticle and this DNA attached Au nanoparticle is self-trapped in between Au nanoelectrodes to make an electrical conduction channel. It provides an automatic electrical conduction channel consisting of electrode-DNA-nanoparticle-DNA-electrode. Due to robust bonding of thiol and Au, this transport channel is stable and reliable. The current-voltage characteristics measured from our device show a nonlinear behavior with voltage gaps comparable to previous experiment using the same molecules.

Original languageEnglish
Pages (from-to)433-438
Number of pages6
JournalSuperlattices and Microstructures
Volume34
Issue number3-6
DOIs
StatePublished - Sep 2003

Keywords

  • DNA
  • Electrical conduction
  • Molecule
  • Nano-gap
  • Thiol

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