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

被引：47

作者：

Pi, HJ

Park, S

Lee, J

Lee, KJ ^{[1
]}

机构：

[1] Korea Univ, Natl Creat Res Initiat Ctr Neurodynam, Seoul 136701, South Korea

[2] Korea Univ, Dept Phys, Seoul 136701, South Korea

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.84.5316

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：5316 / 5319

页数：4

共 20 条

[1] Spatial and temporal dynamics of two interacting modes in parametrically driven surface waves [J].