Force measurements between Sub-100 nm colloidal particles

Darrell Velegol, Gretchen L. Holtzer, Aleksandar F. Radović-Moreno, Joshua D. Cuppett

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Interparticle forces have been measured between polystyrene latex particles as small as 85 nm in diameter in KCl solutions. A variant of the differential electrophoresis technique, called particle force light scattering (PFLS), was used to measure forces between Brownian, nearly touching particles for diameters from 4500 nm down to 85 nm. The forces, some less than 0.1 pN, matched to within a factor of 2 with predictions from depletion and DLVO theory.

Original languageEnglish (US)
Pages (from-to)1275-1280
Number of pages6
Issue number3
StatePublished - Jan 30 2007

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry


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