An electret (formed as a portmanteau of electr- from "electricity" and -et from "magnet") is a dielectric material that has a quasi-permanent electrical polarisation. An electret has internal and external …

The electret is a dielectric material with quasi-permanent charge; after its first theorization by Faraday, the term ‘electret’ was introduced by Oliver Heaviside (1892), in analogy to ‘magnet’, and the first …

Electrets are prepared from certain waxes, plastics, and ceramics, the individual molecules of which are permanently polarized but are randomly arranged before being subjected to an electric field so that …

May 21, 2024 · An electret is a material that has a static electric field. There are many different types of electret, with the main ones...

Jun 11, 2025 · Electrets play a significant role in electromagnetism due to their ability to store and maintain electric charge. They are used in various applications, including sensors, filters, and energy …

Dielectric material with a permanent or quasi-permanent electric dipole. A real-charge electret is obtained by the charge carrier injection onto the surface or into a parent dielectric material.

The meaning of ELECTRET is a dielectric body in which a permanent state of electric polarization has been set up.

Oct 26, 2023 · Electret materials, a portmanteau of ‘electric’ and ‘magnet’, form a critical part of modern electronics. They are essentially dielectric materials, insulators that can hold a quasi-permanent …

Jun 15, 2023 · An electret is an electrical insulator with a near-permanent state of electric polarization. In this article, I look at some common electrets and how they are made and charged.

Jul 15, 2024 · An electret is a dielectric material with quasi-permanent electrical polarization. It’s like the electrostatic counterpart of a permanent magnet. The term “electret” combines “electricity” and …