Influence of humidity on the electrical conductivity of synthesized DNA film on nanogap electrode

Yoichi Otsuka, Hea Yeon Lee, Jian Hua Gu, Jeong O. Lee, Kyung Hwa Yoo, Hidekazu Tanaka, Hitoshi Tabata, Tomoji Kawai

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

We have studied the electrical conductivity of DNA film using nanogap electrodes. Current-voltage measurements and alternating current measurements were performed for analysis of conductivity. The electrical conductivity of the DNA films of poly(dG)·poly(dC) are found to depend strongly on the humidity. The resistance of poly(dG)·poly(dC) decreases dramatically with increasing relative humidity. The contact resistance between DNA film and Au electrodes is also examined by the conventional four-probe technique.

Original languageEnglish
Pages (from-to)891-894
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume41
Issue number2 A
DOIs
Publication statusPublished - 2002 Feb

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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