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