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

Effective temperature in athermal systems sheared at fixed normal load.

Ning Xu1, Corey S O'Hern

  • 1Department of Mechanical Engineering, Yale University, New Haven, Connecticut 06520-8284, USA.

Physical Review Letters
|March 24, 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

Assessment of scoring functions for computational models of protein-protein interfaces.

Physical review. E·2026
Same author

SCUDDO: an unsupervised clustering algorithm for single-cell Hi-C maps using diagonal diffusion operators.

Bioinformatics (Oxford, England)·2026
Same author

Residue burial encodes a protein's fold.

bioRxiv : the preprint server for biology·2026
Same author

Droplet breakup against an isolated obstacle.

Soft matter·2026
Same author

Assessment of scoring functions for computational models of protein-protein interfaces.

ArXiv·2026
Same author

Mechanical plasticity of cell membranes enhances epithelial wound closure.

Physical review research·2025
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

We studied effective temperature (TL) in sheared athermal systems. Results show two regimes: pressure-controlled at low granular temperature/potential energy, and quasiequilibrium at high ratios, impacting thermodynamic descriptions.

Area of Science:

  • Physics
  • Soft Matter Physics
  • Statistical Mechanics

Background:

  • Athermal systems lack inherent thermal energy, relying on mechanical driving.
  • Effective temperature (TL) is a concept used to describe the state of such systems.
  • Understanding TL is crucial for modeling granular materials and soft matter.

Purpose of the Study:

  • To investigate the effective temperature (TL) in repulsive athermal systems under shear.
  • To identify different regimes governing TL based on system parameters.
  • To evaluate the applicability of TL in thermodynamic descriptions of sheared systems.

Main Methods:

  • Molecular dynamics simulations were employed.
  • Repulsive athermal systems were sheared at a fixed normal load.

Related Experiment Videos

  • Time-dependent fluctuation-dissipation relations for density were used to define TL.

    • Main Results:

    • Two distinct regimes were observed based on the ratio of granular temperature (TS) to potential energy per particle (V).
    • At low TS/V, systems are pressure-controlled, with TL determined by the normal load.
    • At high TS/V, systems behave as quasiequilibrium, with TL approximately TS and increasing with shear rate.

    Conclusions:

    • The study highlights limitations in using effective temperature (TL) for thermodynamic descriptions of slowly sheared athermal systems.
    • The identified regimes suggest different physical behaviors under varying shear conditions.
    • Further research is needed to refine thermodynamic models for these systems.