Broadband Complex Permittivity Spectra: Cole-Cole vs Circuit Models.

ABSTRACT: Hydraulic properties such as porosity, water, and clay content can be inferred from electrical parameters like permittivity, conductivity, and resistivity. Spectral data enhance this analysis by revealing features such as pore size and clay type in wet particulate media. In liquid samples, electrode polarization is clearly observed, as orientational polarization occurs only at higher frequencies (MHz to sub-GHz). In contrast, particulate media exhibit electrode polarization artifacts that obscure spatial polarization peaks within the Hz-MHz range, especially in highly conductive materials like wet clayey soils, making the Cole-Cole model insufficient for distinguishing these effects. Therefore, a general circuit model using a parallel form of a resistor and a constant phase element configu

SUBMITTER: Hakiki F 

PROVIDER: S-EPMC12532061 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature