Observation of bulk phase separation and coexistence in a sheared micellar solution

Philippe Boltenhagen, Yuntao Hu, E. F. Matthys, D. J. Pine

Research output: Contribution to journalArticle

Abstract

We observe a shear-flow-induced phase transition in wormlike micelle solutions which depends on whether the applied stress or the applied shear rate is held constant. When the shear stress is held constant, the system macroscopically phase separates into two coexisting phases with a single stable interface between them. By contrast, when the shear rate is held constant, the system still undergoes a phase transition, but the steady states are homogeneous and no coexistence is observed. This leads to dramatically different rheological behavior and unusual long-lived metastable states.

Original languageEnglish (US)
Pages (from-to)2359-2362
Number of pages4
JournalPhysical Review Letters
Volume79
Issue number12
DOIs
StatePublished - 1997

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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