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 Experiment Videos

Quantitative insight into dislocation nucleation from high-temperature nanoindentation experiments.

C A Schuh1, J K Mason, A C Lund

  • 1Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge 02139, USA. schuh@mit.edu

Nature Materials
|July 19, 2005
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Case of Placenta Prævia.

Medical examiner (Philadelphia, Pa.)·2023
Same author

Bloody Tumor of the Vagina Occurring during Labor.

Medical examiner (Philadelphia, Pa.)·2023
Same author

Report on Practical Obstetrics for the Year 1858.

The North American medico-chirurgical review·2023
Same author

Geometric conjecture about phase transitions.

Physical review. E·2023
Same author

Configuration spaces of hard spheres.

Physical review. E·2021
Same author

Statistical topology of bond networks with applications to silica.

Physical review. E·2020

Nanoindentation experiments reveal that plasticity in crystals begins at heterogeneous nucleation sites, challenging previous beliefs of homogeneous dislocation nucleation. This finding offers new insights into the atomic origins of material deformation.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Solid Mechanics

Background:

  • Nanoindentation is widely used to measure mechanical properties at small scales.
  • Atomistic simulations suggest plasticity onset is due to homogeneous dislocation nucleation.
  • Quantitative experimental evidence for these atomic-scale mechanisms is lacking.

Purpose of the Study:

  • To enhance the quantitative capabilities of nanoindentation for studying dislocation nucleation.
  • To investigate the atomic-scale mechanisms of plasticity onset experimentally.

Main Methods:

  • Development and application of high-temperature nanoindentation testing.
  • Introduction of statistical methods for quantitative data evaluation.

Main Results:

Related Experiment Videos

  • Experimental data suggests an unexpected picture of incipient plasticity.
  • Evidence points towards heterogeneous nucleation sites for plasticity onset.
  • Findings contrast with predictions from atomistic simulations.

Conclusions:

  • The study provides the first compelling quantitative experimental support for atomic-scale plasticity mechanisms.
  • Incipient plasticity in crystals appears to involve heterogeneous nucleation, contrary to prior simulations.
  • This work advances nanoindentation as a tool for fundamental materials research.