Measurements of charge nonuniformity on polystyrene latex particles

Jason D. Feick, Darrell Velegol

Research output: Contribution to journalArticlepeer-review

75 Scopus citations


The experimental technique of rotational electrophoresis, similar in principle to standard translational electrophoresis, has been developed to quantify the charge nonuniformity on Brownian colloidal particles. Experiments were conducted on doublets of4.5 μm polystyrene latex particles under various solution conditions, finding variations in zeta potential on individual particle surfaces of 50-75% of the average zeta potentials. Significant charge nonuniformity was found for all systems studied, indicating that charge nonuniformity might be critical in many colloidal applications.

Original languageEnglish (US)
Pages (from-to)3454-3458
Number of pages5
Issue number9
StatePublished - Apr 30 2002

All Science Journal Classification (ASJC) codes

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


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