KERR-EFFECT FROM FRACTAL AGGREGATES OF POLYSTYRENE MICROSPHERES

D ASNAGHI, M GIGLIO, F MANTEGAZZA, M GIARDINI, V DEGIORGIO

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1 Citation (Scopus)

Abstract

We study the slow aggregation of aqueous suspensions of optically isotropic microspheres by means of transient electric birefringence. Aggregating clusters exhibit large Kerr constants, and consequently we provide direct experimental evidence that the clusters do possess form anisotropy. From the birefringence relaxation time we derive information on the average cluster size and on the size distribution, and determine their evolution during the aggregation process. Static and dynamic light scattering data confirm the validity of the transient electric birefringence results.

Original languageEnglish
Pages (from-to)1237-1241
Number of pages5
JournalNuovo cimento della societa italiana di fisica d-Condensed matter atomic molecular and chemical physics fluids plasmas biophysics
Volume16
Issue number8
Publication statusPublished - Aug 1994

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