An effective zeta potential fitting model for sphere-plate interaction force in nanoparticle suspensions

Xiaoting Hong, Mingyue Mo, Xiaohui Wu, Gerold Willing, K. S. Hui, K. N. Hui

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The silica sphere-plate interaction forces in zirconia nanoparticle suspensions have been successfully measured to explain how negligibly charged silica microspheres can be stabilized through the addition of highly charged zirconia nanoparticles. However, the influence of nanoparticle volume fraction on the stabilization as well as how various forces (the attractive van der Waals force, repulsive electrostatic force, and depletion force) contribute to the total interaction force still remains unclear. Therefore, an effective zeta potential fitting model is developed to explain the experimental interaction force curves based on a variable effective Debye length and a measured effective zeta potential using a continuum assumption.

Original languageEnglish
Pages (from-to)338-342
Number of pages5
JournalJournal of Dispersion Science and Technology
Issue number3
Early online date14 Jun 2013
Publication statusPublished - 2014


  • Effective Debye length
  • effective zeta potential
  • nanoparticle haloing
  • sphere-plate interaction force

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