Self-assembling of non-Brownian magnetized spheres

If we pour spherical beads in a container and then gently shake it to increase the compaction of the system, the packing fraction will converge logarithmically to 0.64, the density of a random close packing. If the system is specially sheared, or tapped through an annealing procedure, lattices may s...

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Veröffentlicht in:	Granular matter 2012-05, Vol.14 (3), p.303-308
Hauptverfasser:	Carvente, O., Peraza-Mues, G. G., Salazar, J. M., Ruiz-Suárez, J. C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Annealing Beads Cohesion Complex Fluids and Microfluidics Containers Crystallization Density Engineering Fluid Dynamics Engineering Thermodynamics Foundations Geoengineering Heat and Mass Transfer Hydraulics Industrial Chemistry/Chemical Engineering Lattices Magnetism Materials Science Original Paper Physics Physics and Astronomy Polymorphism Soft and Granular Matter Spheres
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Beschreibung
Zusammenfassung:	If we pour spherical beads in a container and then gently shake it to increase the compaction of the system, the packing fraction will converge logarithmically to 0.64, the density of a random close packing. If the system is specially sheared, or tapped through an annealing procedure, lattices may self-organize. In this work we study granular crystallization induced by magnetic cohesion. We observe an interesting granular polymorphism probably due to an effective van der Waals-like interaction.
ISSN:	1434-5021 1434-7636
DOI:	10.1007/s10035-012-0333-4