Harmonic and subharmonic resonances of microwave absorption in DNA
- 1 August 1989
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 40 (4) , 2148-2153
- https://doi.org/10.1103/physreva.40.2148
Abstract
We have studied theoretically the movement of large molecular groups of DNA double helices in solution, which are driven by the electromagnetic field. The longitudinal vibration of nucleotides and the torsional movement of bases are taken into account at the same time. A set of coupled nonlinear partial differential equations has been established, and we have solved these equations by the method of perturbation. The result shows that there exists resonant absorption of microwave energy for both longitudinal and torsional modes. The resonant frequencies for the former and the latter are in the region of gigahertz and subterahertz, respectively. In addition to an nth-harmonic resonance at , our theory also predicts a subharmonic resonance at /2. The strength of the latter is proportional to , where l is the length of DNA. The necessary conditions to observe these resonances are also discussed.
Keywords
This publication has 22 references indexed in Scilit:
- Microwave response of DNA in solution: TheoryPhysical Review A, 1988
- Microwave absorption in aqueous solutions of DNANature, 1987
- Resonant Microwave Absorption by Dissolved DNAPhysical Review Letters, 1986
- Defect-mediated hydrogen-bond instability of poly(dG)-poly(dC)Physical Review B, 1986
- Microwave-field-driven acoustic modes in DNABiophysical Journal, 1985
- Resonant Microwave Absorption of Selected DNA MoleculesPhysical Review Letters, 1984
- Acoustic modes and nonbonded interactions of the double helixBiopolymers, 1981
- Calculated microwave absorption of double‐helical B‐conformation poly(dG)·poly(dC)Biopolymers, 1981
- On the B to A conformation change of the double helixBiopolymers, 1977
- Lattice vibrational modes of poly (rU)·poly(rA). A coupled single‐helical approachBiopolymers, 1974