Oscillons and propagating solitary waves in a vertically vibrated colloidal suspension

O. Lioubashevski, Y. Hamiel, A. Agnon, Z. Reches, J. Fineberg

Research output: Contribution to journalArticlepeer-review

136 Scopus citations

Abstract

The observation of localized stationary structures, coined oscillons, in granular media has evoked much interest. By parametric excitation of clay suspensions, we demonstrate a hysteretic transition to oscillon-type states in a nongranular medium. When the symmetry of up-down reflection + time translation is lost, these states undergo a transition to propagating localized states previously seen in Newtonian fluids. These observations are in accord with recent theoretical predictions of sufficient conditions for oscillon formation. In addition, a novel measurement technique for the effective suspension viscosity demonstrates their shear-thinning properties. 1999

Original languageAmerican English
Pages (from-to)3190-3193
Number of pages4
JournalPhysical Review Letters
Volume83
Issue number16
DOIs
StatePublished - 18 Oct 1999

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