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.

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’, …

An electret, for example, lines up in an electric field with its positive end pointing in the direction of the field. Electrets, discovered in 1925, have found applications in electrostatic microphones.

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 · An electret is a dielectric material that has a quasi-permanent electric charge or polarization, similar to a permanent magnet. The term "electret" was coined by Oliver …

Electrets are electric equivalents of magnets; electr ic magn ets. Some oriented-dipole electrets are ferroelectric polymers and piezoelectric polymers. Quartz is an example of the natural …

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 …

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 …

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 …

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.