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

Spiral patterns in oscillated granular layers.

J R de Bruyn1, B C Lewis, M D Shattuck

  • 1Department of Physics and Physical Oceanography, Memorial University of Newfoundland, St. John's, Newfoundland, Canada A1B 3X7. jdebruyn@physics.mun.ca

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|April 20, 2001
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

Heterobilharzia americana infection in a Grant's zebra (Equus burchelli boehmi).

Veterinary parasitology, regional studies and reports·2021
Same author

Homoarginine and inhibition of human arginase activity: kinetic characterization and biological relevance.

Scientific reports·2018
Same author

Human dimethylarginine dimethylaminohydrolase 1 inhibition by proton pump inhibitors and the cardiovascular risk marker asymmetric dimethylarginine: in vitro and in vivo significance.

Scientific reports·2017
Same author

A novel KLF6-Rho GTPase axis regulates hepatocellular carcinoma cell migration and dissemination.

Oncogene·2016
Same author

Distribution and characterization of Heterobilharzia americana in dogs in Texas.

Veterinary parasitology·2014
Same author

Cutaneous mast cell tumor with epitheliotropism in 3 dogs.

Veterinary pathology·2012
Same journal

Tension on dsDNA bound to ssDNA-RecA filaments may play an important role in driving efficient and accurate homology recognition and strand exchange.

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Publisher's Note: Amplitude-phase coupling drives chimera states in globally coupled laser networks [Phys. Rev. E 91, 040901(R) (2015)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Erratum: Shapes of sedimenting soft elastic capsules in a viscous fluid [Phys. Rev. E 92, 033003 (2015)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Erratum: Attenuation of excitation decay rate due to collective effect [Phys. Rev. E 90, 022142 (2014)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Publisher's Note: Role of connectivity and fluctuations in the nucleation of calcium waves in cardiac cells [Phys. Rev. E 92, 052715 (2015)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
Same journal

Publisher's Note: Lattice Boltzmann approach for complex nonequilibrium flows [Phys. Rev. E 92, 043308 (2015)].

Physical review. E, Statistical, nonlinear, and soft matter physics·2016
See all related articles

Sudden increases in oscillation amplitude in granular materials create transient spiral patterns. These spirals briefly form before decaying into stripe patterns, offering insights into pattern dynamics.

Area of Science:

  • Physics
  • Complex Systems
  • Materials Science

Background:

  • Granular materials exhibit complex pattern formation under external stimuli.
  • Vertically oscillated granular layers can display various spatial patterns.

Purpose of the Study:

  • To investigate the formation and decay of transient spiral patterns in granular materials.
  • To compare these granular spirals with patterns observed in fluid dynamics.

Main Methods:

  • Subjecting a granular layer to vertical oscillations.
  • Abruptly increasing oscillation amplitude to induce pattern transitions.
  • Observing and analyzing pattern evolution, including spirals and stripes.

Main Results:

Related Experiment Videos

  • Cell-filling spiral patterns emerge upon sudden amplitude increase.
  • These spirals are transient, decaying into defected stripe patterns.
  • A transient state of spiral defect chaos was also observed.

    • Conclusions:

    • Sudden amplitude changes drive distinct pattern transitions in granular systems.
    • The observed spiral dynamics share similarities with phenomena in Rayleigh-Bénard convection.
    • Granular spirals provide a model for studying transient pattern formation and chaos.