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

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Mantegazza, Francesco and Giardini, Mario Ettore and Piazza, Roberto and Degiorgio, Vittorio (1992) The Kerr effect in aqueous dispersions of anisotropic and electrically charged latex particles. Journal of Physics: Condensed Matter, 4. pp. 8683-8696. ISSN 0953-8984 (https://doi.org/10.1088/0953-8984/4/45/004)

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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.

ORCID iDs

Mantegazza, Francesco, Giardini, Mario Ettore ORCID logoORCID: https://orcid.org/0000-0003-4849-9683, Piazza, Roberto and Degiorgio, Vittorio;
CORE (COnnecting REpositories)