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Damping of DNA vibration modes by viscous solvents
Author(s) -
van Zandt L. L.
Publication year - 1981
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560200725
Subject(s) - vibration , limit (mathematics) , amplitude , aqueous solution , physics , frequency spectrum , acoustics , normal mode , microwave , spectrum (functional analysis) , viscous damping , low frequency , materials science , chemistry , mathematical analysis , quantum mechanics , optics , mathematics , astronomy , spectrum analyzer
Abstract The problem of viscous damping of vibrating DNA polymer in aqueous solution is solved in the low‐amplitude limit for all acoustic branches of the spectrum. The acoustic spectrum covers the microwave region of frequencies. The viscious damping is found to be a strong function of frequency, singular both at very low and very high frequencies. All acoustic modes are overdamped, implying that the observation of well‐defined resonances in DNA requires highly structured water or very dry material.