Dokument: Self-sustained frictional cooling in active matter
| Titel: | Self-sustained frictional cooling in active matter | |||||||
| URL für Lesezeichen: | https://docserv.uni-duesseldorf.de/servlets/DocumentServlet?id=71213 | |||||||
| URN (NBN): | urn:nbn:de:hbz:061-20251103-102322-2 | |||||||
| Kollektion: | Publikationen | |||||||
| Sprache: | Englisch | |||||||
| Dokumententyp: | Wissenschaftliche Texte » Artikel, Aufsatz | |||||||
| Medientyp: | Text | |||||||
| Autoren: | Antonov, Alexander P. [Autor] Musacchio, Marco [Autor] Löwen, Hartmut [Autor] Caprini, Lorenzo [Autor] | |||||||
| Dateien: |
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| Beschreibung: | Cooling processes in nature are typically generated by external contact with a cold reservoir or bath. According to the laws of thermodynamics, the final temperature of a system is determined by the temperature of the environment. Here, we report a spontaneous internal cooling phenomenon for active particles, occurring without external contact. This effect, termed self-sustained frictional cooling, arises from the interplay between activity and dry (Coulomb) friction, and in addition is self-sustained from particles densely caged by their neighbors. If an active particle moves in its cage, dry friction will stop any further motion after a collision with a neighbor particle thus cooling the particle down to an extremely low temperature. We demonstrate and verify this self-sustained cooling through experiments and simulations on active granular robots and identify dense frictional arrested clusters coexisting with hot, dilute regions. Our findings offer potential applications in two-dimensional swarm robotics, where activity and dry friction can serve as externally tunable mechanisms to regulate the swarm’s dynamical and structural properties. | |||||||
| Rechtliche Vermerke: | Originalveröffentlichung:
Antonov, A. P., Musacchio, M., Löwen, H., & Caprini, L. (2025). Self-sustained frictional cooling in active matter. Nature Communications, 16, Article 7235. https://doi.org/10.1038/s41467-025-62626-9 | |||||||
| Lizenz: |  Dieses Werk ist lizenziert unter einer Creative Commons Namensnennung 4.0 International Lizenz | |||||||
| Fachbereich / Einrichtung: | Mathematisch- Naturwissenschaftliche Fakultät | |||||||
| Dokument erstellt am: | 03.11.2025 | |||||||
| Dateien geändert am: | 03.11.2025 |
