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

Probe particles alter dynamic heterogeneities in simple supercooled systems.

Ronen Zangi1, Stephan A Mackowiak, Laura J Kaufman

  • 1Department of Chemistry, Columbia University, New York, New York 10027, USA.

The Journal of Chemical Physics
|March 17, 2007
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

Anomalous translational dynamics of molecular probes near the polymer glass transition.

Physical review. E·2026
Same author

The effects of volume exclusion and viscosity on collagen fiber nucleation and network morphology.

Acta biomaterialia·2026
Same author

Quenching Single-Fluorophore Systems and the Emergence of Nonlinear Stern-Volmer Plots.

ACS omega·2026
Same author

Ion-Conductive Wires Form High-Performance All-Solid-State Polymer Electrolytes.

Journal of the American Chemical Society·2026
Same author

Nuclear Packing Sets Fluidity Along the Epithelial to Mesenchymal Spectrum.

bioRxiv : the preprint server for biology·2025
Same author

Mutant p53 regulates cancer cell invasion in complex three-dimensional environments through mevalonate pathway-dependent Rho/ROCK signaling.

Proceedings of the National Academy of Sciences of the United States of America·2025

Smooth probes accelerate supercooled liquids, while rough probes slow them down. Both probe types increase system heterogeneity, with effects strongest near the probe and persisting over time.

Area of Science:

  • Physical Chemistry
  • Computational Materials Science
  • Soft Matter Physics

Background:

  • Supercooled liquids exhibit complex dynamics deviating from simple fluid behavior.
  • Understanding molecular interactions and heterogeneity is crucial for characterizing supercooled states.
  • Probes can influence local dynamics and structure in confined or interacting systems.

Purpose of the Study:

  • To investigate the impact of probe surface properties (smooth vs. rough) on supercooled liquid dynamics.
  • To analyze how probe size influences the heterogeneity and dynamics of a Lennard-Jones mixture.
  • To elucidate the mechanisms by which probes alter the local environment and dynamics of supercooled liquids.

Main Methods:

  • Molecular dynamics simulations of a supercooled Lennard-Jones mixture.

Related Experiment Videos

  • Systematic variation of probe diameter relative to the mixture's particle size.
  • Analysis of mean square displacements, non-Gaussian parameters, and local Debye-Waller factors.

    • Main Results:

    • Large smooth probes accelerate the dynamics of the supercooled liquid.
    • Large rough probes decelerate the dynamics of the supercooled liquid.
    • Both probe types increase system heterogeneity, with localized perturbations near the probes that persist.

    Conclusions:

    • Probe surface roughness significantly alters the dynamics of supercooled liquids.
    • Probes induce persistent heterogeneities in supercooled systems, modifying their inherent dynamics.
    • The findings offer insights into probe-particle interactions and their influence on complex fluid behavior.