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Dynamic light scattering by non-ergodic media

  • J. G. H. Joosten
Chapter
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 91)

Abstract

The basic notions of dynamic light scattering (DLS) on non-ergodic media are presented and discussed. We present the results, obtained by DLS, for the intermediate scattering function of polystyrene latex particles that are dispersed in aqueous polyacrylamide gels. It is shown that these systems display non-ergodic features, implying that the time-averaged intensity correlation function (ICF) is not equal to the ensemble-averaged ICF.

Key words

Lighting scattering non-ergodic media gels tracer diffusion 

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Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1993

Authors and Affiliations

  • J. G. H. Joosten
    • 1
  1. 1.Department for Physical & Analytical ChemistryDSM ResearchGeleenThe Netherlands

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