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

Strain and Elastic Modulus01:15

Strain and Elastic Modulus

6.3K
The quantity that describes the deformation of a body under stress is known as strain. Strain is given as a fractional change in either length, volume, or geometry under tensile, volume (also known as bulk), or shear stress, respectively, and is a dimensionless quantity. The strain experienced by a body under tensile or compressive stress is called tensile or compressive strain, respectively. In contrast, the strain experienced under bulk stress and shear stress is known as volume and shear...
6.3K
Problem Solving on Stress and Strain01:22

Problem Solving on Stress and Strain

1.9K
Stress is a quantity that describes the magnitude of a force that causes deformation, generally defined as internal force per unit area. When forces pull on an object and cause its elongation, like the stretching of an elastic band, it is called tensile stress. When forces cause the compression of an object, it is known as compressive stress. When an object is being squeezed uniformly from all sides, like a submarine in the depths of the ocean, we call this kind of stress bulk stress (or volume...
1.9K
Hooke's Law01:26

Hooke's Law

1.9K
Hooke's law, a pivotal principle in material science, establishes that the strain a material undergoes is directly proportional to the applied stress, defined by a factor called the modulus of elasticity or Young's modulus.
1.9K
Shearing Strain01:20

Shearing Strain

1.9K
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...
1.9K
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

827
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.
827
Elastic Strain Energy for Shearing Stresses01:20

Elastic Strain Energy for Shearing Stresses

682
As discussed in previous lessons, strain energy in a material is the energy stored when it is elastically deformed, a concept crucial in materials science and mechanical engineering. This energy results from the internal work done against the cohesive forces within the material. When a material undergoes shearing stress and corresponding shearing strain, the strain energy density, which is the energy stored per unit volume, is calculated. Within the elastic limit, where the stress is...
682

You might also read

Related Articles

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

Sort by
Same author

A pilot study: dual-contrast arthrography using photon-counting detector computed tomography with gadolinium and iodine contrasts.

Physics in medicine and biology·2026
Same author

<i>In vitro</i> study of spatially-fractionated radiotherapy (SFRT) with gold nanoparticles in cancerous and healthy skin cells.

International journal of radiation biology·2026
Same author

Ring Artifact Reduction in Photon Counting CT Using Redundant Sampling and Autocalibration.

IEEE transactions on medical imaging·2026
Same author

Impact of MYC and BCL2 double expression on outcomes in primary CNS lymphoma: a UK multicenter analysis.

Blood advances·2023
Same author

Mission POCUS in Haiti.

Journal of radiology nursing·2023
Same author

Quality of Life and Social and Psychological Outcomes in Adulthood Following Allogeneic HSCT in Childhood for Inborn Errors of Immunity.

Journal of clinical immunology·2022

Related Experiment Video

Updated: May 5, 2026

Studying Large Amplitude Oscillatory Shear Response of Soft Materials
06:07

Studying Large Amplitude Oscillatory Shear Response of Soft Materials

Published on: April 25, 2019

12.6K

Low-temperature shear modulus changes in solid 4He and connection to supersolidity.

James Day1, John Beamish

  • 1Department of Physics, University of Alberta, Edmonton, Alberta, T6G 2G7 Canada.

Nature
|December 8, 2007
PubMed
Summary

Researchers investigated supersolidity in helium-4 (4He) by measuring its shear modulus. Large increases in the modulus below 200 mK suggest mobile dislocations, potentially explaining previous supersolidity observations.

More Related Videos

Macro-Rheology Characterization of Gill Raker Mucus in the Silver Carp, Hypophthalmichthys molitrix
09:13

Macro-Rheology Characterization of Gill Raker Mucus in the Silver Carp, Hypophthalmichthys molitrix

Published on: July 10, 2020

2.7K
Determining the Mechanical Strength of Ultra-Fine-Grained Metals
05:04

Determining the Mechanical Strength of Ultra-Fine-Grained Metals

Published on: November 22, 2021

1.7K

Related Experiment Videos

Last Updated: May 5, 2026

Studying Large Amplitude Oscillatory Shear Response of Soft Materials
06:07

Studying Large Amplitude Oscillatory Shear Response of Soft Materials

Published on: April 25, 2019

12.6K
Macro-Rheology Characterization of Gill Raker Mucus in the Silver Carp, Hypophthalmichthys molitrix
09:13

Macro-Rheology Characterization of Gill Raker Mucus in the Silver Carp, Hypophthalmichthys molitrix

Published on: July 10, 2020

2.7K
Determining the Mechanical Strength of Ultra-Fine-Grained Metals
05:04

Determining the Mechanical Strength of Ultra-Fine-Grained Metals

Published on: November 22, 2021

1.7K

Area of Science:

  • Quantum physics
  • Condensed matter physics
  • Low-temperature physics

Background:

  • Superfluidity, frictionless liquid flow, is known in helium.
  • Supersolidity, its quantum solid analogue, was suggested by torsional oscillator experiments in helium-4 (4He).
  • Observed frequency changes in 4He torsional oscillators indicated decoupling, but superflow signatures were absent.

Purpose of the Study:

  • To investigate the mechanical behavior of solid 4He at low temperatures.
  • To understand the underlying mechanisms of observed supersolidity phenomena.
  • To correlate elastic properties with defect behavior in solid 4He.

Main Methods:

  • Measurement of the shear modulus of solid 4He at low frequencies and strains.
  • Experiments conducted at temperatures below 200 mK.
  • Analysis of the dependence on measurement amplitude, 3He impurity concentration, and annealing.

Main Results:

  • Large increases in the shear modulus of solid 4He were observed below 200 mK.
  • This elastic behavior showed dependencies on amplitude, 3He concentration, and annealing, mirroring torsional oscillator experiments.
  • A dislocation network, pinned by 3He at low temperatures and mobile above 100 mK, was proposed to explain the results.

Conclusions:

  • The observed unusual elastic behavior in solid 4He is attributed to a mobile dislocation network.
  • Dislocation motion is suggested as the cause for frequency changes in torsional oscillator experiments.
  • Dislocation dynamics may disrupt or explain the phenomena previously interpreted as supersolidity in 4He.