On the mechanism of dielectric relaxation in aqueous DNA solutions. |
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| Authors: | B Saif R K Mohr C J Montrose T A Litovitz |
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| Institution: | Vitreous State Laboratory, Catholic University of America, Washington, DC 20064. |
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| Abstract: | The complex dielectric response of calf thymus DNA in aqueous saline solutions has been measured from 1 MHz to 1 GHz. The results are presented in terms of the relaxation of the incremental contributions to the permittivity and conductivity from the condensed counterions surrounding the DNA molecules. Measurements of the low-frequency conductivity of the samples also lends support to the condensed counterion interpretation. |
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