摘要
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.
源语言 | 英语 |
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文章编号 | 102902 |
期刊 | Applied Physics Letters |
卷 | 108 |
期 | 10 |
DOI | |
出版状态 | 已出版 - 7 3月 2016 |
已对外发布 | 是 |