Emergent phenomena in far-from-equilibrium magnetic granular ensembles at a liquid-air interface.
Conference
·
OSTI ID:979870
Remarkable nontrivially ordered self-assembled structures are formed in ensembles of magnetic microparticles suspended at a liquid/air interface and energized by an alternating magnetic field. These dynamic structures emerge as a result of a competition between magnetic and hydrodynamic forces. Each structure (snake) is accompanied by a hydrodynamic vortex quadrupole. Under certain conditions snakes spontaneously break the symmetry of surface flows and turn into swimmers. Observed phenomena have been successfully described by a phenomenological model.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 979870
- Report Number(s):
- ANL/MSD/CP-64296; TRN: US201011%%341
- Resource Relation:
- Journal Volume: 1145; Journal Issue: 2009; Conference: Powders and Grains Conference 2009; Jul. 13, 2009 - Jul. 17, 2009; Golden, CO
- Country of Publication:
- United States
- Language:
- ENGLISH
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