New method for determination of surface potential of microscopic particles by second harmonic generation

Elsa C Y Yan, Yan Liu, Kenneth B. Eisenthal

Research output: Contribution to journalArticle

142 Citations (Scopus)

Abstract

A new noninvasive method for determining the surface electrostatic potential and surface charge density of microscopic particles using second harmonic generation (SHG) is described. The surface electrostatic properties of 1.05 μm polystyrene sulfate spheres in aqueous solution and that of 0.22 μm oil droplets in aqueous emulsions are obtained. Comparisons of the surface potentials obtained from SHG with the zeta potential obtained from electrophoresis are in excellent agreement with theoretical predictions.

Original languageEnglish
Pages (from-to)6331-6336
Number of pages6
JournalJournal of Physical Chemistry B
Volume102
Issue number33
Publication statusPublished - Aug 13 1998

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Surface potential
Harmonic generation
Electrostatics
harmonic generations
Zeta potential
Surface charge
Charge density
Emulsions
Electrophoresis
Polystyrenes
Oils
electrostatics
electrophoresis
emulsions
sulfates
polystyrene
oils
aqueous solutions
predictions
Sulfates

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

New method for determination of surface potential of microscopic particles by second harmonic generation. / Yan, Elsa C Y; Liu, Yan; Eisenthal, Kenneth B.

In: Journal of Physical Chemistry B, Vol. 102, No. 33, 13.08.1998, p. 6331-6336.

Research output: Contribution to journalArticle

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