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

doi:10.1143/jjap.41.891

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

Department of Physics

Research output: Contribution to journal › Article

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 language	English
Pages (from-to)	891-894
Number of pages	4
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	41
Issue number	2 A
DOIs	https://doi.org/10.1143/jjap.41.891
Publication status	Published - 2002 Feb

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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Otsuka, Yoichi ; Lee, Hea Yeon ; Gu, Jian Hua ; Lee, Jeong O. ; Yoo, Kyung Hwa ; Tanaka, Hidekazu ; Tabata, Hitoshi ; Kawai, Tomoji. / Influence of humidity on the electrical conductivity of synthesized DNA film on nanogap electrode. In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2002 ; Vol. 41, No. 2 A. pp. 891-894.

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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.",

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Influence of humidity on the electrical conductivity of synthesized DNA film on nanogap electrode. / Otsuka, Yoichi; Lee, Hea Yeon; Gu, Jian Hua; Lee, Jeong O.; Yoo, Kyung Hwa; Tanaka, Hidekazu; Tabata, Hitoshi; Kawai, Tomoji.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 41, No. 2 A, 02.2002, p. 891-894.

Research output: Contribution to journal › Article

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AU - Kawai, Tomoji

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