Behavior of Charged Particles in a Biological Cell Exposed to AC-DC Electromagnetic Fields

Abstract

Abstract

Exposure to electromagnetic fields is a research area that has generated conflicting results and thus uncertainty about possible adverse biological effects. This article analyzes the behavior of charged particles in a biological cell when exposed to different combinations of AC-DC electromagnetic fields, by combining the Ion Forced-Vibration theory with the Ion Cyclotron Resonance and Ion Parametric Resonance theories. We analyzed (i) the physical mechanisms caused from resonance response and noise; (ii) the behavior of the particle when exposed to these fields with different combinations of initial position, initial velocity, field strengths, frequencies, and relative angle between AC-DC magnetic fields; and (iii) the particle behavior with certain values of the ratio B_AC/B_DC, where B_AC and B_DC are the strength of AC and DC magnetic fields. Our results show that the influence of combined AC-DC magnetic fields on particle displacement is larger than that of an AC magnetic field alone. The study indicates the particle's resonant response as predicted by Ion Cyclotron Resonance and Ion Parametric Resonance theories, only at unrealistically low viscosity. On the contrary, the study verifies the Ion Forced-Vibration theory in which viscosity is taken into account.