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

Interactions between a solid spherical particle and a chemically heterogeneous planar substrate.

Jeffrey A L Kemps1, Subir Bhattacharjee

  • 1Department of Mechanical Engineering, 4-9 Mechanical Engineering Building, University of Alberta, Edmonton, Canada.

Langmuir : the ACS Journal of Surfaces and Colloids
|December 1, 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

Fixed dose combination dextromethorphan-bupropion: A hope for treatment resistant depression (TRD).

Indian journal of psychiatry·2025
Same author

SSRI induced hypnic jerks: A case series.

Indian journal of psychiatry·2023
Same author

Selective serotonin reuptake inhibitor-induced galactorrhea with hyperprolactinemia.

Indian journal of psychiatry·2022
Same author

Colloidal Fouling of Nanofiltration Membranes: Development of a Standard Operating Procedure.

Membranes·2017
Same author

Thermo-Electrohydrodynamic Patterning in Nanofilms.

Langmuir : the ACS journal of surfaces and colloids·2016
Same author

Compact micro/nano electrohydrodynamic patterning: using a thin conductive film and a patterned template.

Soft matter·2015

Chemically heterogeneous surfaces generate significant lateral forces between particles and substrates, influencing interactions. These forces, particularly at higher electrolyte concentrations, are crucial for understanding surface phenomena.

Area of Science:

  • Surface science
  • Colloid and interface science
  • Nanotechnology

Background:

  • The Derjaguin-Landau-Verwey-Overbeek (DLVO) theory describes interparticle forces.
  • Surface chemical heterogeneity is known to influence particle-surface interactions.
  • A comprehensive understanding of forces in heterogeneous systems is needed.

Purpose of the Study:

  • To model and quantify DLVO interaction forces between a chemically heterogeneous substrate and a spherical particle.
  • To investigate the emergence and characteristics of lateral forces due to surface heterogeneity.
  • To explore the influence of electrolyte concentration and particle proximity to heterogeneous regions.

Main Methods:

  • A computational model decomposing the substrate into nanoscale subunits.

Related Experiment Videos

  • Pairwise summation of DLVO forces between each subunit and the particle.
  • Three-dimensional force calculations considering chemical heterogeneity.

    • Main Results:

    • The model predicts substantial lateral forces at specific separation distances.
    • Lateral forces exceed normal forces between the repulsive barrier and secondary minimum.
    • Lateral forces are amplified at high electrolyte concentrations (approx. 0.1 M) and near heterogeneous region edges.

    Conclusions:

    • Chemical heterogeneity of a substrate can induce significant lateral DLVO forces.
    • These lateral forces play a critical role in particle-surface interactions, alongside normal forces.
    • Both physical roughness and chemical heterogeneity are key factors governing particle-surface interactions.