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Microwave dielectric absorption of DNA in aqueous solution
Author(s) -
Foster Kenneth R.,
Stuchly Maria A.,
Kraszewski Andrzej,
Stuchly Stanislaw S.
Publication year - 1984
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.360230312
Subject(s) - chemistry , microwave , dielectric , aqueous solution , absorption (acoustics) , yield (engineering) , dna , excitation , helix (gastropod) , analytical chemistry (journal) , range (aeronautics) , chemical physics , optics , thermodynamics , organic chemistry , optoelectronics , materials science , physics , biochemistry , quantum mechanics , ecology , biology , snail , composite material
The dielectric properties of aqueous solutions of DNA were measured at frequencies ranging from 0.1 to 12 GHz. The results are analyzed using the Maxwell mixture theory and yield a value for the hydration of the DNA of about 0.4 g/g, which is in the range observed in other investigations. No evidence was found for an additional absorption effect at microwave frequencies, which has been predicted to occur in certain DNA analogs due to the vibrational excitation of the double helix by the applied microwave field.