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

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...

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...

Strain-Energy Density

Strain-Energy Density

Understanding the strain energy density in materials under axial load is crucial for evaluating their mechanical behavior and durability. When a rod is subjected to such a load, it elongates and stores energy, known as strain energy, as potential energy within the material. This energy is measured in terms of energy per unit volume.
In the elastic region of a material, the relationship between the stress and the strain is linear and follows Hooke's Law. The strain energy density in this...

IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...

IR Spectrum Peak Intensity: Dipole Moment

IR Spectrum Peak Intensity: Dipole Moment

The dipole moment of a bond is the product of the partial charge on either atom and the distance between them. Dipole moments influence the efficiency of IR absorption and the peak intensity. When a bond with a dipole moment is placed in an electric field, the direction of the field determines if the bond is compressed or stretched. Electromagnetic radiation consists of an electric field component that rapidly reverses direction. It follows that polar bonds are alternately stretched and...

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,...

You might also read

Related Articles

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

Sort by

Same author

Correction: Ma et al. A Lightweight, Low-Frequency, Broadband Underwater Acoustic Transducer with Ternary Symmetric Excitation: Integrating KNN and Terfenol-D for Enhanced Performance. <i>2026</i>, <i>26</i>, 3645.

Sensors (Basel, Switzerland)·2026

Same author

Controllable Echocardiogram Video Generation Driven by Fine-Grained Cardiac Motion.

IEEE transactions on medical imaging·2026

Same author

Topological piezoelectricity in bulk ferroelectrics.

Nature materials·2026

Same author

Hierarchically Engineered Interfaces in Flexible Piezoelectric Composite Films for Broad-Range Pressure Sensing.

ACS applied materials & interfaces·2026

Same author

A Lightweight, Low-Frequency, Broadband Underwater Acoustic Transducer with Ternary Symmetric Excitation: Integrating KNN and Terfenol-D for Enhanced Performance.

Sensors (Basel, Switzerland)·2026

Same author

Room-temperature ferroelectricity in NaNbO<sub>3</sub> membrane.

Nature communications·2026

Search research articles

Related Experiment Video

Updated: Jun 21, 2025

Spatial Separation of Molecular Conformers and Clusters

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

Defect dipole stretching enables ultrahigh electrostrain.

Shuo Tian¹, Binquan Wang², Bin Li¹

¹School of Materials, Sun Yat-sen University, Shenzhen 518107, P. R. China.

Science Advances

|July 10, 2024

Summary

Researchers developed novel piezoelectric ceramics with ultrahigh electrostrains using defect dipoles. This breakthrough offers superior performance for advanced micro-displacement actuator applications.

More Related Videos

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

Stretching Short Sequences of DNA with Constant Force Axial Optical Tweezers

Stretching Short Sequences of DNA with Constant Force Axial Optical Tweezers

Published on: October 13, 2011

Related Experiment Videos

Last Updated: Jun 21, 2025

Spatial Separation of Molecular Conformers and Clusters

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

Stretching Short Sequences of DNA with Constant Force Axial Optical Tweezers

Stretching Short Sequences of DNA with Constant Force Axial Optical Tweezers

Published on: October 13, 2011

Area of Science:

Materials Science
Solid State Physics
Ceramic Engineering

Background:

Piezoelectric actuators are crucial for micro-displacement due to their high sensitivity and electromagnetic immunity.
Existing piezoelectric ceramics face limitations in achieving ultrahigh electrostrains at lower driving fields.

Purpose of the Study:

To design novel piezoelectric ceramics with enhanced electrostrain properties.
To investigate the role of defect dipoles in improving piezoelectric performance.

Main Methods:

Introducing A-site and oxygen vacancies in (K0.48Na0.52)0.99NbO2.995 ceramics to create <110>-oriented defect dipoles.
Experimental confirmation of defect dipole stretching under an applied electric field.

Main Results:

Achieved ultrahigh electrostrains of 0.7% at 20 kV cm⁻¹ (effective piezoelectric strain coefficient d33* = 3500 pm V⁻¹).
Demonstrated superior performance compared to existing piezoelectric ceramics at the same driving field.
Confirmed that defect dipole stretching is the primary cause of the enhanced electrostrain.

Conclusions:

The strategy of introducing defect dipoles is effective for developing high-performance piezoelectric materials.
The interaction between defect dipoles and <110> spontaneous polarizations minimizes hysteresis and improves fatigue resistance.
These findings pave the way for advanced piezoelectric actuators with unprecedented electrostrain capabilities.