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

Coverage and nearest-neighbor dependence of adsorbate diffusion.

Kin L Wong1, Bommisetty V Rao, Greg Pawin

  • 1Pierce Hall, University of California-Riverside, Riverside, CA 92521, USA.

The Journal of Chemical Physics
|December 15, 2005
PubMed
Summary

Carbon monoxide (CO) diffusion on copper surfaces shows maximum speed at specific coverages. This study reveals repulsion between CO molecules, enabling faster movement and a new method for analyzing surface diffusion dynamics.

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

Structural Tuning Magnetism and Topology in a Magnetic Topological Insulator.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

Distinguishing the Two-Component Anomalous Hall Effect from the Topological Hall Effect.

ACS nano·2022
Same author

SM03, an Anti-CD22 Antibody, Converts <i>Cis</i>-to-<i>Trans</i> Ligand Binding of CD22 against α2,6-Linked Sialic Acid Glycans and Immunomodulates Systemic Autoimmune Diseases.

Journal of immunology (Baltimore, Md. : 1950)·2022
Same author

Metallic <i>vs.</i> semiconducting properties of quasi-one-dimensional tantalum selenide van der Waals nanoribbons.

Nanoscale·2022
Same author

Methanol carbonylation to acetaldehyde on Au particles supported by single-layer MoS<sub>2</sub>grown on silica.

Journal of physics. Condensed matter : an Institute of Physics journal·2022
Same author

Epitaxial Molybdenum Disulfide/Gallium Nitride Junctions: Low-Knee-Voltage Schottky-Diode Behavior at Optimized Interfaces.

ACS applied materials & interfaces·2021

Area of Science:

  • Surface science
  • Physical chemistry
  • Materials science

Background:

  • Understanding adsorbate diffusion is crucial for catalysis and materials design.
  • Previous studies on CO diffusion on metal surfaces have provided insights but lacked detailed coverage-dependent dynamics.

Purpose of the Study:

  • To investigate the coverage and nearest-neighbor effects on carbon monoxide (CO) diffusion on a Cu(111) surface.
  • To develop a novel method for analyzing scanning tunneling microscope (STM) diffusion data.

Main Methods:

  • Time-lapsed scanning tunneling microscope (STM) imaging was employed to observe CO diffusion.
  • Analysis of molecular movement and interactions at various surface coverages.

Main Results:

Related Experiment Videos

  • A maximum in CO diffusivity was observed at a local coverage of one molecule per 20 substrate atoms.
  • Repulsion between CO molecules was identified when they approach within three adsorption sites.
  • These factors, along with a moderate increase in potential energy at the diffusion transition state, facilitate rapid CO diffusion.

Conclusions:

  • CO diffusion on Cu(111) is strongly influenced by coverage and intermolecular interactions.
  • The identified repulsion and transition state energetics explain the observed rapid diffusion.
  • A new STM data evaluation method was proposed for accurate modeling of adsorbate population dynamics.