Model for Dynamic Self-Assembled Magnetic Surface Structures

Details Model for Dynamic Self-Assembled Magnetic Surface Structures Model for Dynamic Self-Assembled Magnetic Surface Structures

2010-02-02

arxiv.org/abs/1002.0328v1

Phys. Rev. E (Rapid) 82, 015301 (2010)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 5 figure, RevTex 4.1

Scientific paper

10.1103/PhysRevE.82.015301

We propose a first-principles model for self-assembled magnetic surface structures on the water-air interface reported in earlier experiments \cite{snezhko2,snezhko4}. The model is based on the Navier-Stokes equation for liquids in shallow water approximation coupled to Newton equations for interacting magnetic particles suspended on the water-air interface. The model reproduces most of the observed phenomenology, including spontaneous formation of magnetic snake-like structures, generation of large-scale vortex flows, complex ferromagnetic-antiferromagnetic ordering of the snake, and self-propulsion of bead-snake hybrids. The model provides valuable insights into self-organization phenomena in a broad range of non-equilibrium magnetic and electrostatic systems with competing interactions.

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