Complex Microwave Conductivity of Na-DNA Powders(Condensed matter: electronic structure and electrical, magnetic, and optical properties)

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概要

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• We report the complex microwave conductivity, σ=σ_1-iσ_2, of Na-DNA powders, which was measured from 80 to 300K by using a microwave cavity perturbation technique. We found that the magnitude of σ_1 near room temperature was much larger than the contribution of the surrounding water molecules, and that the decrease of σ_1 with decreasing temperature was sufficiently stronger than that of the conduction of counterions. These results clearly suggest that the electrical conduction of Na-DNA is intrinsically semiconductive.

• 社団法人日本物理学会の論文
• 2006-09-15

著者

• Ota K.

  Department of Urology & Surgery, Kidney Center, Tokyo Women's Medical College

• MAEDA A.

  Department of Orthodontics, Field of Developmental Medicine, Kagoshima University Graduate School of

• Kitano H.

  Department Of Basic Science University Of Tokyo

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