Dielectric behavior of DNA solution at radio and microwave frequencies (at 20 degrees C)

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Abstract

The dielectric constant and conductivity of calf thymus DNA were investigated at frequencies between 0.1 MHz and 70 GHz. This work is to investigate the dielectric properties of DNA in low gigahertz region and also to study whether the dielectric behavior of the water is affected by the presence of highly charged DNA. The results of these measurements indicate the presence of two anomalous dispersions, the one between 1 MHz and 1 GHz and the second one above 1 GHZ. The dispersion at low frequencies is likely to arise from polar groups in the DNA molecule. The relaxation behavior of unbound water in DNA solution is only slightly affected by the presence of DNA at concentrations below 1%. © 1984, The Biophysical Society. All rights reserved.

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Takashima, S., Gabriel, C., Sheppard, R. J., & Grant, E. H. (1984). Dielectric behavior of DNA solution at radio and microwave frequencies (at 20 degrees C). Biophysical Journal, 46(1), 29–34. https://doi.org/10.1016/S0006-3495(84)83995-8

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