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Complex microwave conductivity of Na-DNA powders

H. Kitano·K. Ota·A. Maeda
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Abstract

We report the complex microwave conductivity, $σ=σ_1-iσ_2$, of Na-DNA powders, which was measured from 80 K to 300 K 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.

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H. Kitano, K. Ota, A. Maeda. 2006-08-01. Complex microwave conductivity of Na-DNA powders. https://doi.org/10.1143/jpsj.75.094704

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