Superlattice, rhombus, square, and hexagonal standing waves in magnetically driven ferrofluid surface

Hyun Jae Pi, So Yeon Park, Jysoo Lee, Kyoung J. Lee

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Standing wave patterns that arise on the surface of ferrofluids by (single frequency) parametric forcing with an ac magnetic field are investigated experimentally. Depending on the frequency and amplitude of the forcing, the system exhibits various patterns including a superlattice and subharmonic rhombuses as well as conventional harmonic hexagons and subharmonic squares. The superlattice arises in a bicritical situation where harmonic and subharmonic modes collide. The rhombic pattern arises due to the nonmonotonic dispersion relation of a ferrofluid.

Original languageEnglish
Pages (from-to)5316-5319
Number of pages4
JournalPhysical review letters
Volume84
Issue number23
DOIs
Publication statusPublished - 2000

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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