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Phys Rev E Stat Nonlin Soft Matter Phys. 2010 Jul;82(1 Pt 2):015301. Epub 2010 Jul 7.

Model for dynamic self-assembled magnetic surface structures.

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  • 1Department of Chemical Engineering, Northwestern University, Evanston, Illinois 60208, USA.

Abstract

We propose a first-principles model for the dynamic self-assembly of magnetic structures at a water-air interface reported in earlier experiments. The model is based on the Navier-Stokes equation for liquids in shallow water approximation coupled to Newton equations for interacting magnetic particles suspended at a water-air interface. The model reproduces most of the observed phenomenology, including spontaneous formation of magnetic snakelike structures, generation of large-scale vortex flows, complex ferromagnetic-antiferromagnetic ordering of the snake, and self-propulsion of bead-snake hybrids.

PMID:
20866678
DOI:
10.1103/PhysRevE.82.015301
[PubMed]
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