Dielectric behavior of aqueous solutions of plasmid DNA at microwave frequencies. |
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| Authors: | C Gabriel E H Grant R Tata P R Brown B Gestblom and E Noreland |
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| Institution: | Department of Physics and Biochemistry, King's College, London, United Kingdom. |
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| Abstract: | The relative permittivity and dielectric loss of aqueous solutions of plasmid (pUC8.c1 and pUC8.c2) DNA have been measured at 20 degrees C over the frequency range 100 MHz-10 GHz. The solutions had a concentration of 0.1% DNA, and were studied both in the relaxed and the supercoiled form. The dielectric measurements were made using a variety of techniques including frequency domain and time domain methods of operation. No evidence of any resonance absorption, nor of any other kind of enhanced absorption, was observed. |
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