The Kerr effect in aqueous dispersions of anisotropic and electrically charged latex particles

Francesco Mantegazza, Mario Ettore Giardini, Roberto Piazza, Vittorio Degiorgio

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Static and dynamic electric birefringence measurements are performed on dispersions of electrically charged fluorinated latex spheres. It is shown that the Kerr constant is made up of three contributions: the first depends on the intrinsic and form anisotropy of the particle; the second arises from the presence of a slowly fluctuating electric dipole which should be originated by the statistics of the surface charge distribution, and the third is connected with the cloud of dissociated counter-ions. This latter contribution shows a non-Lorentzian frequency dispersion, and its amplitude is strongly dependent on the particle concentration and on the ionic strength.
LanguageEnglish
Pages8683-8696
Number of pages14
JournalJournal of Physics: Condensed Matter
Volume4
DOIs
Publication statusPublished - 1992

Fingerprint

Radiation counters
Charge distribution
Latex
Surface charge
latex
Birefringence
Kerr effects
Ionic strength
Latexes
Dispersions
Particles (particulate matter)
Anisotropy
Statistics
charge distribution
electric dipoles
birefringence
counters
statistics
anisotropy
ions

Keywords

  • Kerr effect
  • aqueous dispersions
  • anisotropic
  • electrically charged
  • latex particles

Cite this

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The Kerr effect in aqueous dispersions of anisotropic and electrically charged latex particles. / Mantegazza, Francesco; Giardini, Mario Ettore; Piazza, Roberto; Degiorgio, Vittorio.

In: Journal of Physics: Condensed Matter, Vol. 4, 1992, p. 8683-8696.

Research output: Contribution to journalArticle

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T1 - The Kerr effect in aqueous dispersions of anisotropic and electrically charged latex particles

AU - Mantegazza, Francesco

AU - Giardini, Mario Ettore

AU - Piazza, Roberto

AU - Degiorgio, Vittorio

PY - 1992

Y1 - 1992

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AB - Static and dynamic electric birefringence measurements are performed on dispersions of electrically charged fluorinated latex spheres. It is shown that the Kerr constant is made up of three contributions: the first depends on the intrinsic and form anisotropy of the particle; the second arises from the presence of a slowly fluctuating electric dipole which should be originated by the statistics of the surface charge distribution, and the third is connected with the cloud of dissociated counter-ions. This latter contribution shows a non-Lorentzian frequency dispersion, and its amplitude is strongly dependent on the particle concentration and on the ionic strength.

KW - Kerr effect

KW - aqueous dispersions

KW - anisotropic

KW - electrically charged

KW - latex particles

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