Abstract
For eliminating the limits in the classical models, here we establish a general model for precisely predicting dielectric constant of porous materials. In this model, dielectric constant is independent on pore shapes when the pore size is far smaller than electromagnetic wavelengths; however, it depends on the porosities and correlation between the open pore direction and wave propagation direction. The structure factor β in the effective dielectric formula is 1 and 3 for through-hole and closed-pore materials, respectively. The experimental results are in good agreement with the model, suggesting a favorable tool for predicting dielectric properties of porous materials.
Original language | English |
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Article number | 102902 |
Journal | Applied Physics Letters |
Volume | 108 |
Issue number | 10 |
DOIs | |
Publication status | Published - 7 Mar 2016 |
Externally published | Yes |