Electret

{
  "id": "MLC-T-CHM-003625",
  "term": "Electret",
  "field": "Chemistry",
  "definition": "A dielectric material that exhibits a quasi-permanent electric charge or dipole polarization, analogous to how a permanent magnet retains its magnetic field. This persistent polarization is typically induced by applying a strong electric field during or after solidification, or by charge injection. Electrets find applications in microphones, air filters, and electrostatic generators.",
  "subject": "Polymer",
  "see_also": [
    "charge carrier",
    "dielectric material",
    "poling"
  ],
  "references": [
    "PAC, 2022, 94, 15. 'Glossary of terms relating to electronic, photonic and magnetic properties of polymers (IUPAC Recommendations 2021)' on page 25 (https://doi.org/10.1515/pac-2020-0501)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/electret/"
}