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

Transformation of Plane Strain01:12

Transformation of Plane Strain

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...
Temperature Dependent Deformation01:12

Temperature Dependent Deformation

In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added together...
Deformations in a Symmetric Member in Bending01:18

Deformations in a Symmetric Member in Bending

When analyzing the deformation of a symmetric prismatic member subjected to bending by equal and opposite couples, it becomes clear that as the member bends, the originally straight lines on its wider faces curve into circular arcs, with a constant radius centered at a point known as Point C. This phenomenon helps to understand the stress and strain distribution within the member more clearly.
When the member is segmented into tiny cubic elements, it is observed that the primary stress...
Deformation of a Beam under Transverse Loading01:15

Deformation of a Beam under Transverse Loading

Understanding beam deflection, particularly for indeterminate beams with overhanging segments and multiple concentrated loads, is crucial for ensuring structural integrity and functionality. The process begins with constructing an accurate free-body diagram, which helps identify the forces and moments acting on the beam. This diagram is vital for visualizing how bending moments vary along the beam's length, influencing its curvature.
The insights from the bending moment diagram extend to...
Shearing Strain01:20

Shearing Strain

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...
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity01:15

Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity

Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.

You might also read

Related Articles

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

Sort by
Same author

Detective quantum efficiency of the Timepix4 hybrid pixel detector and its application to parallel-beam diffraction.

Ultramicroscopy·2026
Same author

Detective Quantum Efficiency-Based Comparison of HRTEM and Ptychography Phase Imaging.

Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·2026
Same author

Drift correction methods for multi-pass 4D-STEM.

Ultramicroscopy·2026
Same author

Comparison between first-principles supercell calculations of polarons and the ab initio polaron equations.

The Journal of chemical physics·2026
Same author

Symmetry-protected topological polarons.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Quantitative Nanoscale Structure Determination in Polymer Desalination Membranes by Correlated Electron Tomography and Spectroscopy.

ACS nano·2026

Related Experiment Video

Updated: May 20, 2026

Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding
14:52

Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding

Published on: September 23, 2018

Dislocation-driven deformations in graphene.

Jamie H Warner1, Elena Roxana Margine, Masaki Mukai

  • 1Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK. jamie.warner@materials.ox.ac.uk

Science (New York, N.Y.)
|July 17, 2012
PubMed
Summary
This summary is machine-generated.

Dislocations move in graphene through bond rotation or atom loss, deforming the lattice. This study reveals atomic-level dynamics of plastic deformation in 2D materials.

More Related Videos

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon
06:57

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

Published on: July 17, 2020

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices
11:24

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices

Published on: July 11, 2025

Related Experiment Videos

Last Updated: May 20, 2026

Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding
14:52

Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding

Published on: September 23, 2018

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon
06:57

Theoretical Calculation and Experimental Verification for Dislocation Reduction in Germanium Epitaxial Layers with Semicylindrical Voids on Silicon

Published on: July 17, 2020

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices
11:24

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices

Published on: July 11, 2025

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Dislocation movement is fundamental to plastic deformation in crystalline materials.
  • Research on dislocation dynamics has primarily focused on three-dimensional materials.
  • Experimental data on atomic-level dislocation dynamics in graphene is limited.

Purpose of the Study:

  • To investigate the dynamics of dislocation pairs in graphene at the atomic level.
  • To understand the mechanisms of dislocation movement and their impact on graphene's lattice structure.
  • To experimentally observe and characterize the atomic-scale deformation caused by dislocations in graphene.

Main Methods:

  • Utilized single-atom sensitivity techniques to record dislocation dynamics.
  • Analyzed stepwise dislocation movement along the zig-zag lattice direction.
  • Determined strain fields to understand lattice deformation.

Main Results:

  • Observed dislocation movement mediated by single bond rotation or the loss of two carbon atoms.
  • Characterized the atomic-level deformation of graphene by dislocations.
  • Identified strain fields involving C-C bond elongation/compression, shear, and lattice rotations.

Conclusions:

  • Dislocation dynamics in graphene can be mediated by distinct atomic mechanisms.
  • Dislocations induce significant atomic-level deformation in graphene's lattice.
  • This research provides crucial experimental insights into plastic deformation in two-dimensional materials.