Driven magnetic particles on a fluid surface: Pattern assisted surface flows

M. Belkin, A. Snezhko, I. S. Aranson, W. K. Kwok

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

Magnetic microparticles suspended on the liquid-air interface and subjected to an alternating magnetic field exhibit spontaneous formation of dynamic localized snake patterns. These patterns are accompanied by four large-scale hydrodynamic vortices located at the opposite ends of the snake patterns. We report detailed studies of these large-scale vortices and their relationship to the collective response of magnetic particles in the presence of an alternating magnetic field. We present a model based on the amplitude equation for surface waves coupled to the large-scale hydrodynamic mean flow equation. The model describes both the formation of the dynamic snake patterns and the induced structure of the experimentally observed hydrodynamic flows.

Original languageEnglish (US)
Article number158301
JournalPhysical Review Letters
Volume99
Issue number15
DOIs
StatePublished - Oct 9 2007

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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