Use of the loss-tangent function in dielectric spectroscopy.
A new method for finding the dielectric parameters of biological substances is presented. The method makes use of the loss-tangent as a function of frequency to identify the dominating relaxation process. The method was tested for a few cell suspensions (blood and lymphocytes) and two tissues (liver and spleen). The obtained parameters agree well with those calculated from Maxwell-Wagner theory (beta dispersion).
D000818:Animals; D001703:Biophysics / Q000379:methods*; D001790:Blood Physiological Phenomena; D002415:Cats; D004553:Electric Conductivity; D006801:Humans; D066298:In Vitro Techniques; D008099:Liver / Q000502:physiology; D008214:Lymphocytes / Q000502:physiology; D013057:Spectrum Analysis / Q000379:methods*; D013154:Spleen / Q000502:physiology