Long-range interactions, wobbles, and phase defects in chains of model cilia
Douglas R Brumley, Nicolas Bruot, Jurij Kotar, Raymond E Goldstein, Pietro Cicuta, Marco Polin
PHYSICAL REVIEW FLUIDS | AMER PHYSICAL SOC | Published : 2016
Eukaryotic cilia and flagella are chemo-mechanical oscillators capable of generating long-range coordinated motions known as metachronal waves. Pair synchronization is a fundamental requirement for these collective dynamics, but it is generally not sufficient for collective phase-locking, chiefly due to the effect of long-range interactions. Here we explore experimentally and numerically a minimal model for a ciliated surface: hydrodynamically coupled oscillators rotating above a no-slip plane. Increasing their distance from the wall profoundly affects the global dynamics, due to variations in hydrodynamic interaction range. The array undergoes a transition from a traveling wave to either a ..View full abstract
We are grateful to T.J. Pedley and D. Bartolo for useful discussions. This work was supported by a Human Frontier Science Program Cross-Disciplinary Fellowship (D.R.B.), a Wellcome Trust Senior Investigator Award (R.E.G.), and the EU ERC CoG Hydrosync (P.C.).