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Related Concept Videos

Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
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Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...

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Electroactive Properties of PVDF-Based Ferroelectric Polymers: A Review.

Ba Qin1, Peng Wang1, Wanli Xing1

  • 1National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, School of Chemistry, Xi'an Jiaotong University, Xi'an, Shaanxi, P. R. China.

Macromolecular Rapid Communications
|November 12, 2025
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Summary

Flexible electronic devices rely on intelligent materials like Poly(vinylidene fluoride) (PVDF)-based ferroelectric polymers. These materials show promise for sensors and solid-state cooling by harnessing piezoelectric and electrocaloric effects.

Keywords:
electroactive propertieselectrocaloric effectelectro‐actuation effectpiezoelectric effectpoly(vinylidene fluoride) (PVDF)‐based ferroelectric polymers

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Area of Science:

  • Materials Science
  • Polymer Science
  • Ferroelectric Materials

Background:

  • Intelligent technologies drive demand for advanced flexible electronics.
  • Intelligent materials are crucial for miniaturization, integration, and energy efficiency.
  • Poly(vinylidene fluoride) (PVDF)-based ferroelectric polymers offer piezoelectric, deformation, and electrocaloric effects.

Purpose of the Study:

  • To provide a comprehensive review of PVDF-based ferroelectric polymers.
  • To cover piezoelectric, electro-actuation, and electrocaloric effects.
  • To analyze progress, limitations, and future challenges.

Main Methods:

  • Review of fundamental principles of PVDF ferroelectric effects.
  • Analysis of modification strategies (chemical, physical, processing).
  • Examination of representative device implementations.

Main Results:

  • PVDF polymers exhibit significant potential in sensors, actuators, and solid-state refrigeration.
  • Various modification strategies have yielded remarkable performance improvements.
  • Progress in harnessing piezoelectric, electro-actuation, and electrocaloric effects is highlighted.

Conclusions:

  • PVDF-based ferroelectric polymers are key for next-generation flexible electronics.
  • Further research is needed to overcome existing limitations and address future challenges.
  • Continued development promises advancements in intelligent material applications.