Super-lattice, rhombus, square, and hexagonal standing waves in magnetically driven ferrofluid surface
Soft Condensed Matter
2009-10-31 v1 Statistical Mechanics
Pattern Formation and Solitons
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 non-monotonic dispersion relation of a ferrofluid.
Cite
@article{arxiv.cond-mat/0005224,
title = {Super-lattice, rhombus, square, and hexagonal standing waves in magnetically driven ferrofluid surface},
author = {Hyun-Jae Pi and So-yeon Park and Jysoo Lee and Kyoung J. Lee},
journal= {arXiv preprint arXiv:cond-mat/0005224},
year = {2009}
}