Diffusion and structure in dense binary suspensions

P. D. Kaplan, A. G. Yodh, D. J. Pine

Research output: Contribution to journalArticlepeer-review


Model colloids composed of two widely separated sizes of poly- styrene spheres are studied at high volume fractions using an optical, multiple-scattering technique. These measurements probe hydrodynamic forces between unlike particles, as well as static, structural predictions made using the Percus-Yevick approximation. The dynamic data corroborate currently available hydrodynamic theories on very short length scales; the dynamic data also reveal a new, experimentally accessible range of intermediate length scales which currently available theories cannot explain.

Original languageEnglish (US)
Pages (from-to)393-396
Number of pages4
JournalPhysical Review Letters
Issue number3
StatePublished - 1992

ASJC Scopus subject areas

  • General Physics and Astronomy


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