Localized instability on the route to disorder in faraday waves

Itamar Shani*, Gil Cohen, Jay Fineberg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


We experimentally investigate how disorder comes about in parametrically excited waves on a fluid surface (Faraday waves). We find that the transition from an ordered pattern to disorder corresponding to "defect-mediated turbulence" is mediated by a spatially incoherent oscillatory phase. This phase consists of highly damped waves that propagate through the effectively elastic lattice defined by the pattern. They have a well-defined frequency, velocity, and transverse polarization. As these waves decay within a few lattice spaces, they are spatially and temporally uncorrelated at larger scales.

Original languageAmerican English
Article number184507
JournalPhysical Review Letters
Issue number18
StatePublished - 7 May 2010


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