High dielectric permittivity in silica-polyaniline nanocomposites

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Updated: Aug 9, 2026

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
06:34

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Published on: September 19, 2020

Kousik Dutta1, S K De

  • 1Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata - 700 032, India.

Journal of Nanoscience and Nanotechnology
|April 1, 2006
PubMed

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Susceptibility, Permittivity and Dielectric Constant01:26

Susceptibility, Permittivity and Dielectric Constant

When placed in an external electric field, a dielectric material gets polarized. The charge density in the dielectric material is given by the sum of the bound and free charge densities, while the total charge density can also be written in terms of the total electric field. The bound charge density can be measured in terms of polarization, leading to the relationship between electric displacement and polarization.