Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Susceptibility, Permittivity and Dielectric Constant01:26

Susceptibility, Permittivity and Dielectric Constant

1.8K
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.
1.8K
Poisson's And Laplace's Equation01:25

Poisson's And Laplace's Equation

3.4K
The electric potential of the system can be calculated by relating it to the electric charge densities that give rise to the electric potential. The differential form of Gauss's law expresses the electric field's divergence in terms of the electric charge density.
3.4K
Dielectric Polarization in a Capacitor01:31

Dielectric Polarization in a Capacitor

5.0K
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...
5.0K
Electrostatic Boundary Conditions in Dielectrics01:27

Electrostatic Boundary Conditions in Dielectrics

1.4K
When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's...
1.4K
Electromagnetic Waves in Matter01:30

Electromagnetic Waves in Matter

3.3K
Electromagnetic waves can travel in the vacuum as well as in matter. For example light, which is an electromagnetic wave, can travel through air, water, or glass.
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the...
3.3K
Gauss's Law in Dielectrics01:17

Gauss's Law in Dielectrics

4.6K
Consider a polar dielectric placed in an external field. In such a dielectric, opposite charges on adjacent dipoles neutralize each other, such that the net charge within the dielectric is zero. When a polar dielectric is inserted in between the capacitor plates, an electric field is generated due to the presence of net charges near the edge of the dielectric and the metal plates interface. Since the external electrical field merely aligns the dipoles, the dielectric as a whole is neutral. An...
4.6K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Anomalous dynamics in complex quantum systems with nonlocal interactions.

Chaos (Woodbury, N.Y.)·2026
Same author

Nonlocal Response in Electrolytic Cells: A Generalized Poisson-Nernst-Planck Model with Memory Effects.

The journal of physical chemistry. B·2025
Same author

A splay-twist phase stabilized by the interaction between the nematic and torsional fields in nematics.

Soft matter·2025
Same author

Winding up dynamics for matched and unmatched elastic constants in chiral nematic liquid crystals.

Soft matter·2025
Same author

Anomalous relaxation and electrical impedance: A diffusion approach with adsorption-desorption at the interfaces.

Chaos (Woodbury, N.Y.)·2025
Same author

Diffusion in comb-structured surfaces coupled to bulk processes.

Chaos (Woodbury, N.Y.)·2025
Same journal

Divergent Aggregation Pathways of DNA-AuNPs: Non-Watson-Crick Assembly Mediated by Structurally Diverse Electrolytes.

The journal of physical chemistry. B·2026
Same journal

Assessing Fluoroacetate Defluorination Potential across Diverse Enzymes Using Quantum Chemistry.

The journal of physical chemistry. B·2026
Same journal

Na<b><sup>+</sup></b> Solvation and Association in Na(SO<sub>3</sub>CF<sub>3</sub>)-Dimethoxyethane Electrolytes by Large-Angle X-Ray Scattering and DFT Calculations.

The journal of physical chemistry. B·2026
Same journal

Donor-Acceptor Separation Augments Temperature Dependence of Kinetic Isotope Effects in NADH Model Hydride Transfer Reactions: Mimicking Enzyme versus Mutant Dynamics.

The journal of physical chemistry. B·2026
Same journal

Disordered Worm-Like Clusters in a Hexagonal Mesophase Former: Simulation and Thermodynamic Description.

The journal of physical chemistry. B·2026
Same journal

Comparative Biophysical Analysis of Healthy and Inflamed Intestinal Membrane Models Using Langmuir Monolayers.

The journal of physical chemistry. B·2026
See all related articles

Related Experiment Video

Updated: Aug 31, 2025

Finite Element Modelling of a Cellular Electric Microenvironment
08:23

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

3.5K

Frequency-Dependent Dielectric Permittivity in Poisson-Nernst-Planck Model.

M P Rosseto1, L R Evangelista1, E K Lenzi2

  • 1Department of Physics, Maringá State University, Maringá, Paraná 87020-900, Brazil.

The Journal of Physical Chemistry. B
|August 19, 2022
PubMed
Summary
This summary is machine-generated.

This study integrates molecular polarization and ion dynamics in dielectric materials, revealing their interconnected effects on material properties across different frequencies. The findings clarify how charge densities influence permittivity and impedance.

More Related Videos

Microfluidic Device for the Separation of Non-Metastatic MCF-7 and Non-Tumor MCF-10A Breast Cancer Cells Using AC Dielectrophoresis
08:33

Microfluidic Device for the Separation of Non-Metastatic MCF-7 and Non-Tumor MCF-10A Breast Cancer Cells Using AC Dielectrophoresis

Published on: August 11, 2022

2.5K
Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
11:10

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model

Published on: May 23, 2018

12.0K

Related Experiment Videos

Last Updated: Aug 31, 2025

Finite Element Modelling of a Cellular Electric Microenvironment
08:23

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

3.5K
Microfluidic Device for the Separation of Non-Metastatic MCF-7 and Non-Tumor MCF-10A Breast Cancer Cells Using AC Dielectrophoresis
08:33

Microfluidic Device for the Separation of Non-Metastatic MCF-7 and Non-Tumor MCF-10A Breast Cancer Cells Using AC Dielectrophoresis

Published on: August 11, 2022

2.5K
Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
11:10

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model

Published on: May 23, 2018

12.0K

Area of Science:

  • Materials Science
  • Physical Chemistry
  • Dielectric Spectroscopy

Background:

  • Traditionally, molecular polarization and ion dynamics in dielectrics are studied independently.
  • These phenomena are often assumed to occur in distinct frequency ranges: ionic migration at low frequencies and molecular polarization at high frequencies.

Purpose of the Study:

  • To investigate the interplay between free and bound charge densities.
  • To understand their combined influence on permittivity and impedance profiles in dielectric materials.
  • To incorporate frequency-dependent polarizability into the Poisson-Nernst-Planck model.

Main Methods:

  • Development of a modified Poisson-Nernst-Planck (PNP) model.
  • Inclusion of frequency-dependent (non-instantaneous) polarizability within the model.
  • Analysis of dielectric material responses.

Main Results:

  • Demonstration of the interplay between ionic and molecular charge dynamics.
  • Quantification of their combined impact on dielectric permittivity.
  • Characterization of their influence on impedance spectra.

Conclusions:

  • The proposed PNP model effectively captures the coupled behavior of charge carriers.
  • Frequency-dependent polarizability is crucial for accurately modeling dielectric responses.
  • This unified approach enhances understanding of dielectric material behavior.