Bouncing, chasing or pausing: asymmetric collisions of active droplets

Autor:	Lippera, Kevin, Benzaquen, Michael, Michelin, Sebastien
Rok vydání:	2020
Předmět:	Physics - Fluid Dynamics Condensed Matter - Soft Condensed Matter Physics - Biological Physics Physics - Chemical Physics
Zdroj:	Phys. Rev. Fluids, 2020, 5, 032201
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevFluids.5.032201
Popis:	Chemically-active droplets exhibit complex avoiding trajectories. While heterogeneity is inevitable in active matter experiments, it is mostly overlooked in their modelling. Exploiting its geometric simplicity, we fully-resolve the head-on collision of two swimming droplets of different radii and demonstrate that even a small contrast in size critically conditions their collision and subsequent dynamics. We identify three fundamentally-different regimes. The resulting high sensitivity of pairwise collisions is expected to profoundly affect their collective dynamics. Comment: 7 pages, 5 figures, to appear in Physical Review Fluids
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2002.05085 Zobrazit plný text záznamu View this record from Arxiv