The research is aimed in development of a method, which enables us to infer the geometrical features of the porous medium from its dielectric response. It focused on a systematic study of how the pore-space geometry of an insulating porous material influences the low- and high-frequency dielectric relaxation and electric conductivity of the system when the pore space is filled with a conductor or another dielectric. These parameters are determined by the geometry of pore size distributions and fractal dimensions, and provide information about the cooperative relaxation processes and the mesostructural features of the matrix. The dielectric spectroscopy data describe an overall picture of the relaxation dynamics associated with the polarization of the system and the charge transport mechanisms.

 

 

 

Figure 3 The typical three-dimensional plot of the complex dielectric permittivity real ε‘(a) and imaginary part  ε” (b) versus frequency and temperature for porous glass. The dielectric permittivity and losses associated with the relaxation of water molecules of the adsorptive layer for the studied porous glasses versus frequency and temperature can be can be described in terms of the four distributed relaxation processes (shown by figures).