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

Thermal Strain01:19

Thermal Strain

2.8K
Thermal strain is a concept that arises when we consider how temperature changes affect structures. Unlike the conventional assumption that structures remain constant under load, real-world scenarios often involve temperature fluctuations that can significantly impact these structures. Consider a homogeneous rod with a uniform cross-section resting freely on a flat horizontal surface. If the rod's temperature increases, the rod elongates. This elongation is proportional to the temperature...
2.8K
Shearing Strain01:20

Shearing Strain

1.3K
The shearing strain represents a cubic element's angular change when subjected to shearing stress. This type of stress can transform a cube into an oblique parallelepiped without influencing normal strains. The cubic element experiences a significant transformation when exposed solely to shearing stress. Its shape alters from a perfect cube into a rhomboid, clearly demonstrating the effect of shearing strain. The degree of this strain is considered positive if it reduces the angle between the...
1.3K
Measurements of Strain01:27

Measurements of Strain

2.5K
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
2.5K
Strain Energy01:13

Strain Energy

932
Strain energy is a fundamental concept in the field of materials science and structural engineering, describing the energy absorbed by a material or structure when it is deformed under load.
Consider a rod that is fixed at one end and subjected to an axial force at the free end. This axial force induces stress within the rod, leading to its elongation. As the axial force increases, so does the elongation of the rod, illustrating a direct relationship between the force applied and the resulting...
932
Stress-Strain Diagram01:10

Stress-Strain Diagram

2.3K
A stress-strain diagram is a crucial tool that graphically displays a material's mechanical characteristics. This diagram is derived from a tensile test performed on a carefully prepared cylindrical specimen. The specimen has two gauge marks inscribed on its central part, and the distance between these marks is known as the gauge length. The cylindrical specimen is placed in a testing machine, which applies an increasing centric load. As this load grows, so does the gauge length. This...
2.3K
Transformation of Plane Strain01:12

Transformation of Plane Strain

497
When analyzing elongated structures like bars subjected to uniformly distributed loads, it is essential to understand the transformation of plane strain when coordinate axes are rotated. This transformation helps to assess how material deformation characteristics vary with orientation, which is crucial in materials science and structural engineering.
Under plane strain conditions, typical for members where one dimension significantly exceeds the others, deformations and resultant strains are...
497

You might also read

Related Articles

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

Sort by
Same author

Intrinsic auxetic piezoelectricity in bulk ferroelectrics.

National science review·2026
Same author

Predictive drift compensation of multi-frame STEM via live scan modification.

Ultramicroscopy·2026
Same author

Dynamic Scan Shaping: Overcoming Coil Hysteresis for High-Speed STEM.

Microscopy (Oxford, England)·2026
Same author

Polar discontinuities, emergent conductivity, and critical twist-angle-dependent behaviour at wafer-bonded ferroelectric interfaces.

Nature communications·2026
Same author

Electron Channeling Contrast Imaging of Ferroelastic Domains.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Magnetization generation and giant nonlinear transport at symmetry-engineered interfaces.

Nature communications·2026

Related Experiment Video

Updated: Jan 22, 2026

Gradient Strain Chip for Stimulating Cellular Behaviors in Cell-laden Hydrogel
13:28

Gradient Strain Chip for Stimulating Cellular Behaviors in Cell-laden Hydrogel

Published on: August 8, 2017

8.4K

Strain-gradient mediated local conduction in strained bismuth ferrite films.

Ming-Min Yang1, Affan N Iqbal2, Jonathan J P Peters2

  • 1Department of Physics, The University of Warwick, Coventry, CV4 7AL, UK. Mingmin.Yang.1@warwick.ac.uk.

Nature Communications
|June 28, 2019
PubMed
Summary

Strain gradients significantly impact photoelectric properties in bismuth ferrite (BiFeO3) thin films. This flexo-photovoltaic effect leads to varied photoconduction, offering insights for optoelectronic devices.

More Related Videos

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy
09:35

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy

Published on: July 28, 2020

5.4K
Measuring Local Tissue Strains in Tendons via Open-Source Digital Image Correlation
07:50

Measuring Local Tissue Strains in Tendons via Open-Source Digital Image Correlation

Published on: January 27, 2023

3.6K

Related Experiment Videos

Last Updated: Jan 22, 2026

Gradient Strain Chip for Stimulating Cellular Behaviors in Cell-laden Hydrogel
13:28

Gradient Strain Chip for Stimulating Cellular Behaviors in Cell-laden Hydrogel

Published on: August 8, 2017

8.4K
Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy
09:35

Applying Dynamic Strain on Thin Oxide Films Immobilized on a Pseudoelastic Nickel-Titanium Alloy

Published on: July 28, 2020

5.4K
Measuring Local Tissue Strains in Tendons via Open-Source Digital Image Correlation
07:50

Measuring Local Tissue Strains in Tendons via Open-Source Digital Image Correlation

Published on: January 27, 2023

3.6K

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Semiconductor Physics

Background:

  • Strain gradients can separate electron-hole pairs in semiconductors.
  • The effect of strain gradients on photoelectric properties of photo-active materials is not well understood.

Purpose of the Study:

  • To investigate the role of strain gradients in mediating local photoelectric properties.
  • To characterize the local conduction in strained BiFeO3 thin films under varying conditions.

Main Methods:

  • Systematic characterization of local conduction with nanometre lateral resolution.
  • Measurements performed in both dark and illuminated conditions on strained BiFeO3 thin films.

Main Results:

  • Giant strain gradients at morphotropic phase boundaries were observed.
  • A flexo-photovoltaic effect was identified, inducing enhanced photoconduction in the R-phase.
  • Negative photoconductivity was observed in the morphotropic phase.

Conclusions:

  • Strain gradients critically influence local photoelectric properties in BiFeO3.
  • The flexo-photovoltaic effect mediated by strain gradients has significant implications for optoelectronic and photovoltaic devices.