title: Hydrodynamic synchronization of autonomously oscillating optically trapped particles.
abstract: Ellipsoidal micron-sized colloidal particles can oscillate spontaneously when trapped in a focused laser beam. If two oscillating particles are held in proximity their oscillations synchronize through hydrodynamic interactions. The degree of synchronization depends on the distance between the oscillators and on their orientation. Due to the anisotropic nature of hydrodynamic coupling the synchronization is strongest when particles are arranged along the direction of oscillations. Similar behavior is observed for many oscillating particles arranged in a row. Experimental observations are well reproduced with a model that uses a phenomenological description of the optical force and hydrodynamic interactions. Our results show that oscillating ellipsoidal particles can serve as a model system for studying hydrodynamic synchronization between biological cilia.
authors: Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia.
authors: Ivna
authors: I
authors: Kavre
authors: J. Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.
authors: Andrej
authors: A
authors: Vilfan
authors: Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1000 Ljubljana, Slovenia.
authors: Dušan
authors: D
authors: Babič
mesh_terms: D057446:Hydrodynamics; D008962:Models, Theoretical; D009038:Motion; D052898:Optical Tweezers