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URN to cite this document: urn:nbn:de:bvb:703-epub-8741-7
Title data
Lakkis, Ali ; Biersack, Matthias ; Bilous, Oksana ; Kantorovich, Sofia ; Richter, Reinhard:
Two time scales drive the formation of transient networks in a ferrogranular experiment.
In: Soft Matter.
(2026)
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ISSN 1744-683X
DOI der Verlagsversion: https://doi.org/10.1039/D5SM00726G
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Abstract
We are reporting experiments on the aggregation dynamics in a horizontally confined granular mixture composed of glass and magnetized steel spheres, under vertical vibration. Upon a sudden decrease of the shaking amplitude, magnetized particles undergo a transition from a dispersed to an aggregated state. For deep quenches, a transient, percolating network of magnetized spheres rapidly emerges and gradually coarsens into compact clusters. In contrast, moderate amplitude reductions lead directly to dense cluster formation without intermediate networking. Using structural and network metrics such as coordination number and its mean value, we identify two characteristic timescales: a fast one governing the head-to-tail chaining typical of dipolar hard spheres (DHS), and a slower one corresponding to the restructuring into compact aggregates. This progression is driven by the intrinsic susceptibility of the beads but is challenged by inter-sphere-friction. Thus, the employed susceptible dipolar hard spheres (SDHS) are a minimal model for phase separation with two intrinsic time scales in only one constituent.
Further data
| Item Type: | Article in a journal |
|---|---|
| DDC Subjects: | 500 Science > 530 Physics |
| Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics V > Chair Experimental Physics V - Univ.-Prof. Dr. Oliver Bäumchen Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics V |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-8741-7 |
| Date Deposited: | 11 Dec 2025 13:24 |
| Last Modified: | 11 Dec 2025 13:25 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/8741 |
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