Dresden 2020 – scientific programme
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DY: Fachverband Dynamik und Statistische Physik
DY 28: Pattern Formation and Reaction-Diffusion Systems
DY 28.7: Talk
Tuesday, March 17, 2020, 11:45–12:00, ZEU 147
Pattern formation in confined magnetizable granular matter — •Eric Opsomer1, Simon Merminod2, Julien Schockmel1, Nicolas Vandewalle1, Michael Berhanu3, and Eric Falcon3 — 1University of Liège, Liège, Belgium — 2Brandeis University, Waltham, USA (MA) — 3CNRS, Université Paris Diderot, Paris, France
Magnetizable granular materials can be used as model systems for the study of phase transitions, crystallization and pattern formation. Indeed, in addition to granular gases and crystalline arrangements, labyrinthine structures have been reported in confined vibrated systems were agitation is competing with magnetic repulsion between particles.
Here, we present DEM simulations of vibrated magnetizable spheres in a Hele-Shaw cell and study the impact of the gap size on the observed structures. By tuning the confinement, we recreate established experimental data and generate new structures displaying herringbone patterns.