- AutorIn
- Gabi Steinbach Technische Univesität Chemnitz
- Michael SchreiberTechnische Univesität Chemnitz
- Dennis NissenUniversität Augsburg
- Manfred Albrecht
- Ekaterina Novak
- Pedro A. Sánchez
- Sofia S. Kantorovich
- Sibylle Gemming
- Artur Erbe
- Titel
- Field-responsive colloidal assemblies defined by magnetic anisotropy
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:ch1-qucosa2-706410
- Quellenangabe
- Physical Review E Verlag: American Physical Society
E-ISSN: 2470-0053
DOI: 10.1103/PhysRevE.100.012608
Artikelnummer: 012608 - Erstveröffentlichung
- 2019
- Abstract (EN)
- Particle dispersions provide a promising tool for the engineering of functional materials that exploit self-assembly of complex structures. Dispersion made from magnetic colloidal particles is a great choice; they are biocompatible and remotely controllable among many other advantages. However, their dominating dipolar interaction typically limits structural complexity to linear arrangements. This paper shows how a magnetostatic equilibrium state with noncollinear arrangement of the magnetic moments, as reported for ferromagnetic Janus particles, enables the controlled self-organization of diverse structures in two dimensions via constant and low-frequency external magnetic fields. Branched clusters of staggered chains, compact clusters, linear chains, and dispersed single particles can be formed and interconverted reversibly in a controlled way. The structural diversity is a consequence of both the inhomogeneity and the spatial extension of the magnetization distribution inside the particles. We draw this conclusion from calculations based on a model of spheres with multiple shifted dipoles. The results demonstrate that fundamentally new possibilities for responsive magnetic materials can arise from interactions between particles with a spatially extended, anisotropic magnetization distribution.
- Andere Ausgabe
- Physical Review E
DOI: 10.1103/PhysRevE.100.012608 - Freie Schlagwörter (EN)
- Dipolar interaction , Functional materials , Magnetic field alignment , Magnetic interactions , Self-assembly , Magnetic colloids , Molecular dynamics , Optical microscopy , Sputtering
- Klassifikation (DDC)
- 530
- Normschlagwörter (GND)
- Kolloid, Magnetismus, Assemblierung
- Verlag
- American Physical Society, USA
- Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:ch1-qucosa2-706410
- Veröffentlichungsdatum Qucosa
- 27.04.2020
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch