Yielding and Rearrangements in Disordered Emulsions

P. Hébraud, F. Lequeux, J. P. Munch, D. J. Pine

Research output: Contribution to journalArticlepeer-review

Abstract

We use diffusing-wave spectroscopy to measure the motion of droplets in concentrated emulsions subjected to a periodic shear strain. The strain gives rise to periodic echoes in the correlation function which decay with increasing strain amplitude. For a given strain amplitude, the decay of the echoes implies that a finite fraction of the emulsion droplets never rearranges under periodic strain while the remaining fraction of droplets repeatedly rearranges. Yielding occurs when about 4–5% of the droplets rearrange.

Original languageEnglish (US)
Pages (from-to)4657-4660
Number of pages4
JournalPhysical Review Letters
Volume78
Issue number24
DOIs
StatePublished - Jun 16 1997

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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