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

The Electrical Double Layer

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...

Induced Electric Dipoles

Induced Electric Dipoles

A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...

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...

Electrostatic Boundary Conditions in Dielectrics

Electrostatic Boundary Conditions in Dielectrics

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 permittivity.

π Electron Effects on Chemical Shift: Overview

π Electron Effects on Chemical Shift: Overview

An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0, resulting in...

You might also read

Related Articles

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

Sort by

Same author

Shielding Si Armed with CoSi<sub>2</sub> Nanoplates and Dual-Carbon Shells: 3D Porous Microspheres as High-Performance Anodes for Li-Ion Batteries.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2025

Same author

Covalently crosslinked coacervates: immobilization and stabilization of proteins with enhanced enzymatic activity.

Soft matter·2024

Same author

How Plasmon Ag Nanoparticles can Enhance the Power Performance of a Thermoelectric Generator.

Small (Weinheim an der Bergstrasse, Germany)·2024

Same author

Effect of Tannic Acid Concentrations on Temperature-Sensitive Sol-Gel Transition and Stability of Tannic Acid/Pluronic F127 Composite Hydrogels.

Gels (Basel, Switzerland)·2024

Same author

Synthesis of PEDOT/CNTs Thermoelectric Thin Films with a High Power Factor.

Materials (Basel, Switzerland)·2024

Same author

Synergistic Combination of Dual Clays in Multilayered Nanocomposites for Enhanced Flame Retardant Properties.

ACS omega·2024

Search research articles

Related Experiment Video

Updated: May 11, 2026

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Electric-field Control of Electronic States in WS₂ Nanodevices by Electrolyte Gating

Published on: April 12, 2018

Electric field induced morphological transitions in polyelectrolyte multilayers.

Chungyeon Cho¹, Ju-Won Jeon, Jodie Lutkenhaus

¹Materials Science and Engineering Program, Texas A&M University, College Station, Texas 77843, United States.

ACS Applied Materials & Interfaces

|May 21, 2013

Summary

Applying an electric field to weak polyelectrolyte multilayers (PEMs) creates tunable porous structures. This controlled porosity enables the release of small molecules from these films.

More Related Videos

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

Assembly and Characterization of Polyelectrolyte Complex Micelles

Assembly and Characterization of Polyelectrolyte Complex Micelles

Published on: March 2, 2020

Related Experiment Videos

Last Updated: May 11, 2026

Electric-field Control of Electronic States in WS2 Nanodevices by Electrolyte Gating

Electric-field Control of Electronic States in WS₂ Nanodevices by Electrolyte Gating

Published on: April 12, 2018

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives

Published on: February 7, 2017

Assembly and Characterization of Polyelectrolyte Complex Micelles

Assembly and Characterization of Polyelectrolyte Complex Micelles

Published on: March 2, 2020

Area of Science:

Materials Science
Electrochemistry
Polymer Science

Background:

Weak polyelectrolyte multilayers (PEMs) are versatile materials with tunable properties.
Understanding their response to external stimuli like electric fields is crucial for advanced applications.

Purpose of the Study:

To investigate the morphological transitions in weak PEMs under electric field application.
To elucidate the mechanism behind electric-field-induced porosity.
To explore the potential for controlled release of molecules.

Main Methods:

Assembly of PEMs using linear poly(ethylene imine) (LPEI) and poly(acrylic acid) (PAA).
Application of an electric field to induce morphological changes.
Analysis of structural rearrangements and pore formation.

Main Results:

Electric field exposure induces porous structures in PEMs due to local pH changes and structural rearrangements.
Morphological transitions initiate at the electrode interface and propagate through the film.
Tunable pore sizes (micro- and nanoscale) and porosity are achieved by varying electric field duration.
Electrical potential facilitates the release of small molecules from the PEMs.

Conclusions:

Electric fields offer a method to control the morphology and porosity of weak PEMs.
The study provides insights into the mechanism of electric-field-induced porous transitions.
PEMs can be utilized for controlled release applications triggered by electrical potential.