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

Shear instabilities in granular mixtures.

Massimo Pica Ciamarra1, Antonio Coniglio, Mario Nicodemi

  • 1Dipartimento di Scienze Fisiche, Università di Napoli Federico II, INFM-Coherentia, INFN and AMRA, Naples, Italy. picaciam@na.infn.it

Physical Review Letters
|May 21, 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

Emergent domain segregation in self-interacting polymers explains chromosome 3D conformations in single human cells.

Physical review. E·2026
Same author

Physics-Based Modeling of Sparse Single-Cell Hi-C Uncovers Structural and Epigenetic Variability.

International journal of molecular sciences·2026
Same author

Functional architecture of cardiac TF regulatory landscapes in control of mammalian heart development.

bioRxiv : the preprint server for biology·2026
Same author

An integrated view of the structure and function of the human 4D nucleome.

Nature·2025
Same author

Geometrical and vibrational properties of the defects driving the boson peak.

Physical review. E·2025
Same author

Specialised super-enhancer networks in stem cells and neurons.

bioRxiv : the preprint server for biology·2025

Researchers discovered a new granular instability under shear, forming segregated striped patterns. This finding advances understanding of pattern formation and segregation in granular flows.

Area of Science:

  • Physics
  • Granular Mechanics
  • Fluid Dynamics

Background:

  • Dynamical instabilities are well-known in fluid mechanics, causing phenomena like sea waves and Taylor vortices.
  • The study of dynamical instabilities in granular media is a nascent field.
  • Previous research has not extensively explored instabilities leading to segregation in granular mixtures.

Purpose of the Study:

  • To demonstrate the existence of a novel dynamical instability in granular mixtures.
  • To investigate the properties of this instability and its connection to pattern formation and segregation.
  • To characterize the striped segregation patterns formed by the instability.

Main Methods:

  • Molecular dynamics simulations were employed to model the granular mixture.

Related Experiment Videos

  • The simulations subjected the granular mixture to oscillating horizontal shear.
  • Analysis focused on the emergent patterns and component segregation.

    • Main Results:

    • A new dynamical instability was identified in granular mixtures under oscillating shear.
    • This instability leads to the formation of distinct striped patterns.
    • The striped patterns are characterized by the segregation of mixture components.

    Conclusions:

    • The discovered instability is a Kelvin-Helmholtz-like phenomenon in granular flow.
    • This instability is a key mechanism for pattern formation and component segregation in granular materials.
    • Findings contribute to understanding complex behaviors in granular media.