title: Dielectric behavior of aqueous solutions of plasmid DNA at microwave frequencies.
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.
authors.affiliation: Department of Physics and Biochemistry, King's College, London, United Kingdom.
authors.forename: C
authors.initials: C
authors.lastname: Gabriel
authors.forename: E H
authors.initials: EH
authors.lastname: Grant
authors.forename: R
authors.initials: R
authors.lastname: Tata
authors.forename: P R
authors.initials: PR
authors.lastname: Brown
authors.forename: B
authors.initials: B
authors.lastname: Gestblom
authors.forename: E
authors.initials: E
authors.lastname: Noreland
mesh_terms: D004278:DNA, Superhelical / Q000648:ultrastructure; D004926:Escherichia coli; D008872:Microwaves; D009690:Nucleic Acid Conformation; D010957:Plasmids; D012996:Solutions
chemical_list: D004278:DNA, Superhelical; D012996:Solutions