Abstract
An estimate is presented for the rate of microwave absorption by magnetic nanoparticles in the organism. The absorption takes place because of energy dissipation at ferromagnetic resonance. Based on the known solution of the Landau-Lifshits equation, the imaginary part of complex susceptibility is evaluated, which gives the absorption rate. It is shown that even under thermal isolation of the particles, their heating would be insignificant upon absorption of radiation with an energy flux density on the order of 1 mW/cm2, and such a mechanism is unrelated to the observable effects of low-intensity microwaves.
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References
WHO/IARC Press Release No. 208 (World Health Organization, Lyon, 31 May 2011).
N. D. Devyatkov, M. B. Golant, and O. V. Betskii, Millimeter Waves and Their Role in Vital Processes (Radio i Svyaz’, Moscow, 1991) [in Russian].
V. N. Binhi, Magnetobiology: Experiments and Models (MILTA, Moscow, 2002) [in Russian].
J. L. Kirschvink, Bioelectromagnetics 17, 187 (1996).
A. G. Gurevich and G. A. Melkov, Magnetic Oscillations and Waves (Fizmatlit, Moscow, 1994) [in Russian].
Tables of Physical Quantities, Ed. by I. A. Kikoin (Atomizdat, Moscow, 1976) [in Russian].
P. C. Fannin, C. N. Marin, I. Malaescu, and N. Stefu, Physica B 388, 87 (2007).
J. Ostwald, W. Pazold, and O. Weis, Appl. Phys. 13, 351 (1977).
K. P. Belov, Uspekhi Fiz. Nauk 163, 351 (1977).
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Original Russian Text © V.N.Binhi, 2011, published in Biofizika, 2011, Vol. 56, No. 6, pp. 1134–1137.
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Binhi, V.N. Microwave absorption by magnetic nanoparticles in the organism. BIOPHYSICS 56, 1096–1098 (2011). https://doi.org/10.1134/S0006350911060029
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DOI: https://doi.org/10.1134/S0006350911060029