Threaded rings that swim in excitable media
| Autor: | David Evans, Kate E. Horner, Paul Sutcliffe, Brette M. Chapin, Jonathan W. Steed, Fabian Maucher, Elizabeth H. C. Bromley, Antonio Cincotti, Andrew Lobb |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Scroll
Biophysics FOS: Physical sciences General Physics and Astronomy Pattern Formation and Solitons (nlin.PS) Condensed Matter - Soft Condensed Matter Ring (chemistry) 01 natural sciences Protein filament Diffusion Computer Science::Emerging Technologies 0103 physical sciences Perpendicular Computer Simulation 010306 general physics Nonlinear Sciences::Pattern Formation and Solitons Swimming Excitable medium Physics Plane (geometry) Models Cardiovascular Models Theoretical Nonlinear Sciences - Pattern Formation and Solitons Core (optical fiber) Classical mechanics Soft Condensed Matter (cond-mat.soft) Oregonator Algorithms |
| Zdroj: | Physical review letters, 2019, Vol.123(25) [Peer Reviewed Journal] Cincotti, A, Maucher, F M B M J, Evans, D, Chapin, B M, Horner, K, Bromley, E, Lobb, A, Steed, J W & Sutcliffe, P 2019, ' Threaded Rings that Swim in Excitable Media ', Physical Review Letters, vol. 123, no. 25, 258102 . https://doi.org/10.1103/PhysRevLett.123.258102 |
| DOI: | 10.1103/PhysRevLett.123.258102 |
| Popis: | Cardiac tissue and the Belousov-Zhabotinsky reaction provide two notable examples of excitable media that support scroll waves, in which a filament core is the source of spiral waves of excitation. Here we consider a novel topological configuration in which a closed filament loop, known as a scroll ring, is threaded by a pair of counter-rotating filaments that are perpendicular to the plane of the ring and end on the boundary of a thin medium. We simulate the dynamics of this threaded ring (thring) in the photosensitive Belousov-Zhabotinsky excitable medium, using the modified Oregonator reaction-diffusion equations. These computations reveal that the threading topology induces an exotic motion in which the thring swims in the plane of the ring. We propose a light templating protocol to create a thring in the photosensitive Belousov-Zhabotinsky medium and provide experimental confirmation that this protocol indeed yields a thring. 8 pages, 6 figures. Version to appear in PRL |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|