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

Enhanced dispersion interaction in confined geometry.

Michal Marcovitch1, Haim Diamant

  • 1School of Physics & Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel.

Physical Review Letters
|December 31, 2005
PubMed
Summary

The dispersion interaction between particles in a dielectric slab is significantly amplified by confinement. This enhancement increases with greater mismatch in dielectric permittivities between the media.

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

The effects of ionic valency and size asymmetry on counterion adsorption.

The Journal of chemical physics·2026
Same author

Theory of Microphase Separation in Elastomers.

Physical review letters·2025
Same author

Second Law of Thermodynamics without Einstein Relation.

Physical review letters·2025
Same author

Universal Relation between Entropy and Kinetics.

Physical review letters·2023
Same author

Detecting and characterizing phase transitions in active matter using entropy.

Soft matter·2023
Same author

Resolving entropy contributions in nonequilibrium transitions.

Physical review. E·2023

Area of Science:

  • Condensed matter physics
  • Quantum field theory

Background:

  • Dispersion forces, like the Casimir-Polder interaction, govern particle interactions.
  • Confinement in dielectric media can alter these fundamental forces.

Purpose of the Study:

  • To investigate the impact of dielectric confinement on dispersion interactions between pointlike particles.
  • To quantify the enhancement of retarded interactions under specific geometric and material conditions.

Main Methods:

  • Utilizing continuum (Lifshitz) theory to model the interaction.
  • Analyzing the effects of dielectric permittivity mismatch and temperature.

Main Results:

  • Retarded (Casimir-Polder) interactions are strongly enhanced by increasing the dielectric permittivity mismatch.

Related Experiment Videos

  • Confinement introduces multiplicative factors to large-distance interactions, dependent on the dielectric ratio gamma = epsilon(in)(0)/epsilon(out)(0).
  • Amplification can reach several orders of magnitude, particularly at zero temperature.

    • Conclusions:

    • Dielectric confinement significantly amplifies dispersion interactions.
    • The degree of amplification is tunable via material selection (dielectric permittivity mismatch).
    • This phenomenon has implications for nanoscale systems and material design.