Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Potential Due to a Polarized Object

Potential Due to a Polarized Object

A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...

Dielectric Polarization in a Capacitor

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...

You might also read

Related Articles

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

Sort by

Same author

Human activities and climatic factors drive decoupling effects of parasitoids-invasive agromyzid leafminers.

Pest management science·2026

Same author

Increasing invasion risk of the global invader Phenacoccus solenopsis: environmental niche expansion and potential economic impacts on cotton production.

Journal of environmental management·2026

Same author

Outcomes and predictors of success of endoscopic retrograde pancreatic drainage for pancreatic leaks and fistulas: a multicenter retrospective study.

BMC gastroenterology·2026

Same author

Age-dependent mechanical heterogeneity in immature murine bone: A nanoindentation mapping study.

Journal of biomechanics·2026

Same author

Dichotomous Initial Exciton Conversion at a DPP2Py2T-PCBM Interface: Insights from Embedded <i>GW</i>-Bethe-Salpeter Equation Calculations.

The journal of physical chemistry. B·2026

Same author

Plasma-activated hydrogel promotes postoperative colonic anastomotic leak healing.

Journal of advanced research·2026

Search research articles

Related Experiment Video

Updated: May 10, 2025

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Published on: September 19, 2020

Unveiling Synergistic Interface Effects on Charge Trapping Regulation in Polymer Composite Dielectrics through

Haoxiang Zhao^1,2,3, Lixuan An⁴, Daning Zhang¹

¹State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

The Journal of Physical Chemistry. B

|April 23, 2025

Summary

This study introduces a new theoretical framework for polymer dielectrics, revealing how interface design can improve dielectric strength by controlling charge transport through molecular interactions and morphology. This offers new paths for advanced energy materials.

More Related Videos

Finite Element Modelling of a Cellular Electric Microenvironment

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Related Experiment Videos

Last Updated: May 10, 2025

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Published on: September 19, 2020

Finite Element Modelling of a Cellular Electric Microenvironment

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

Area of Science:

Materials Science
Polymer Science
Computational Chemistry

Background:

Interface design is crucial for enhancing dielectric strength in polymer composites by regulating charge transport.
Current understanding of interface mechanisms is limited, hindering targeted design due to complexities in electronic processes and morphology.

Purpose of the Study:

To develop a theoretical framework for polymer dielectrics based on charge hopping and multiscale modeling.
To elucidate the molecular origins of interface effects on charge transport and dielectric properties.

Main Methods:

A multiscale modeling approach was employed, linking quantum properties of charge carriers with nano- and mesoscale structural details.
The charge hopping model was applied to a cellulose-oil interface system.

Main Results:

Charges are trapped in the disordered region of the cellulose-oil interface.
Dual-interface regulation mechanisms were identified: energetic factors suppress back-transfer, and low electronic coupling suppresses forward-transfer.

Conclusions:

The study provides fundamental insights into molecular origins of interface effects in polymer dielectrics.
This work offers new development pathways for advanced energy materials with tailored electrical properties through dual-interface regulation.