ID Number		204
Study Type		Engineering & Physics
Model		Model for calculating RF energy deposition into the lipid bilayer of cell membranes
Details		Experiments with pulsed radio frequency fields have shown influence on the low-frequency behaviour of lipid bilayer membranes (see FGF-Project >>Boheim and Hansen<<: Boheim et al, 2nd World Congress for Electricity and Magnetism in Biology and Medicine, Bologna, Italy, 1997, pg. 30). In this study an electromagnetic and thermal analysis of the used exposure device to clarify whether the observed effects have a thermal cause and to determine the fields at the lipid bilayer is presented. Both the electromagnetic and the thermal analysis are performed for a variety of material parameters of the exposure device. The combined electromagnetic and thermal calculations reveal that the temperature oscillations due to the pulsed radio frequency fields are too small to directly influence the low-frequency behaviour of the lipid bilayer. The authors state that experiments with input powers fed into the hollow waveguide of up to at least 10 W are clearly performed in the athermal range.
Findings		Not Applicable to Bioeffects
Status		Completed With Publication
Principal Investigator		University of Wuppertal, FRG - hansen@uni-wuppertal.de
Funding Agency		FGF, Germany
Country		GERMANY
References		Eibert, TF et al. IEEE Trans Biomed Eng, (1999) 46:1013-1021 Hansen, VW IEEE Trans Biomed Eng, (1999) 46:1022-1032 Hansen, VW et al. IEEE Trans Biomed Eng, (1999) 41:487-492
Comments		FGF database ID# C1