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

Evaluation of Surface Ionization Parameters from AFM Data

Zhmud1, Meurk, Bergström

  • 1Institute for Surface Chemistry YKI, Stockholm, SE-11486, Sweden

Journal of Colloid and Interface Science
|October 30, 1998
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

Tip friction - torsional spring constant determination.

Colloids and surfaces. B, Biointerfaces·2000
Same author

Elastic compton scattering from the deuteron and nucleon polarizabilities

Physical review letters·2000
Same author

Micellar Interactions in Nonionic/Ionic Mixed Surfactant Systems.

Journal of colloid and interface science·2000
Same author

Dynamics of Capillary Rise.

Journal of colloid and interface science·2000
Same author

Bacterioplankton Production in Humic Lake Örträsket in Relation to Input of Bacterial Cells and Input of Allochthonous Organic Carbon.

Microbial ecology·2000
Same author

First Mass-resolved Measurement of High-Energy Cosmic-Ray Antiprotons.

The Astrophysical journal·2000
Same journal

Synthesis of covalent organic frameworks and plasmon-assisted exfoliation for enhanced solar hydrogen production.

Journal of colloid and interface science·2026
Same journal

Efficient hydrogen production and anti-coking via reforming of waste plastics by oxygen vacancy promoted plasma-catalysis.

Journal of colloid and interface science·2026
Same journal

Lanthanum-modulated hollow CuO nanofibers enable selective CO<sub>2</sub> electroreduction to multicarbon products at high current densities.

Journal of colloid and interface science·2026
Same journal

Tris(vinyl dimethylsilyl) phosphate: Enhancing interface stability in high-voltage Li-ion batteries at elevated temperatures.

Journal of colloid and interface science·2026
Same journal

Electron-donor modulated built-in electric fields in Ni<sub>2</sub>P/MoS<sub>2</sub> Heterostructures for accelerated sodium storage kinetics.

Journal of colloid and interface science·2026
Same journal

Porous flexible structure mediated synergistic boost of built-in electric field and photothermal effect for enhanced photocatalysis.

Journal of colloid and interface science·2026
See all related articles

This study demonstrates atomic force microscopy (AFM) for surface charge analysis. The research quantifies surface ionization parameters, revealing limitations of traditional models for interacting surfaces.

Area of Science:

  • Surface Science
  • Colloid and Interface Science
  • Physical Chemistry

Background:

  • Understanding surface charge is crucial for predicting interactions in colloidal systems.
  • Classical models (constant-charge, constant-potential) have limitations in describing real surface behavior.
  • Atomic Force Microscopy (AFM) offers high-resolution force measurements at interfaces.

Purpose of the Study:

  • To present a novel application of AFM for evaluating surface ionization parameters.
  • To investigate the charge-regulation model for interacting silicon nitride and silica surfaces.
  • To quantitatively interpret experimental data and determine surface properties as a function of pH and separation.

Main Methods:

  • Utilizing Atomic Force Microscopy (AFM) to measure interaction forces between silicon nitride and silica surfaces.

Related Experiment Videos

  • Performing measurements in aqueous electrolytic solutions across a range of pH values and surface separations.
  • Applying Derjaguin's approximation and a charge-regulation model for quantitative data interpretation.

    • Main Results:

    • Experimental data on surface interactions were obtained and analyzed quantitatively.
    • Surface charge density, surface potential, and ion concentrations were calculated as functions of pH and separation.
    • The study identified the limitations of constant-charge and constant-potential approximations.

    Conclusions:

    • The charge-regulation model provides a more accurate description of surface ionization compared to classical approximations.
    • AFM is a powerful tool for probing surface charge properties and validating theoretical models.
    • Consideration of non-DLVO forces and surface irregularities is important for accurate interpretation of surface interactions.