Takashima S, Gabriel C, Sheppard R J, Grant E H
Biophys J. 1984 Jul;46(1):29-34. doi: 10.1016/S0006-3495(84)83995-8.
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%.
在0.1兆赫兹至70吉赫兹的频率范围内研究了小牛胸腺DNA的介电常数和电导率。这项工作旨在研究低吉赫兹区域内DNA的介电特性，同时研究高电荷DNA的存在是否会影响水的介电行为。这些测量结果表明存在两种反常色散，一种在1兆赫兹至1吉赫兹之间，另一种在1吉赫兹以上。低频处的色散可能源于DNA分子中的极性基团。在浓度低于1%时，DNA的存在对DNA溶液中未结合水的弛豫行为影响很小。
