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Cammann, Jan ; Schwarzendahl, Fabian Jan ; Ostapenko, Tanya ; Lavrentovich, Danylo ; Bäumchen, Oliver ; Mazza, Marco G.:
Emergent probability fluxes in confined microbial navigation.
In: Proceedings of the National Academy of Sciences of the United States of America.
Bd. 118
(2021)
Heft 39
.
- e2024752118.
ISSN 1091-6490
DOI: https://doi.org/10.1073/pnas.2024752118
Abstract
When the motion of a motile cell is observed closely, it appears erratic, and yet the combination of nonequilibrium forces and surfaces can produce striking examples of organization in microbial systems. While most of our current understanding is based on bulk systems or idealized geometries, it remains elusive how and at which length scale self-organization emerges in complex geometries. Here, using experiments and analytical and numerical calculations, we study the motion of motile cells under controlled microfluidic conditions and demonstrate that probability flux loops organize active motion, even at the level of a single cell exploring an isolated compartment of nontrivial geometry. By accounting for the interplay of activity and interfacial forces, we find that the boundary’s curvature determines the nonequilibrium probability fluxes of the motion. We theoretically predict a universal relation between fluxes and global geometric properties that is directly confirmed by experiments. Our findings open the possibility to decipher the most probable trajectories of motile cells and may enable the design of geometries guiding their time-averaged motion.
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| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | Active matter; Microswimmers; Nonequilibrium statistical mechanics; Probability fluxes; Microbial motility |
| Institutionen der Universität: | Fakultäten Fakultäten > Fakultät für Mathematik, Physik und Informatik Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Experimentalphysik V Fakultäten > Fakultät für Mathematik, Physik und Informatik > Physikalisches Institut > Lehrstuhl Experimentalphysik V > Lehrstuhl Experimentalphysik V - Univ.-Prof. Dr. Oliver Bäumchen Profilfelder > Advanced Fields > Nichtlineare Dynamik Profilfelder Profilfelder > Advanced Fields |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Eingestellt am: | 04 Okt 2021 09:55 |
| Letzte Änderung: | 29 Jul 2024 12:10 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/67147 |