2026-04-13T02:05:19Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1849492025-12-04T20:45:44Zcom_2072_1057col_2072_478822col_2072_478905col_2072_478914col_2072_478917

00925njm 22002777a 4500 dc Cereceda-López, Eric author Lips, Dominik author Ortiz-Ambriz, Antonio author Ryabov, Artem author Maass, Philipp author Tierno, Pietro author 2022-04-13T15:00:18Z 2022-04-13T15:00:18Z 2021-11-17 2022-04-13T15:00:18Z Hydrodynamic interactions between fluid-dispersed particles are ubiquitous in soft matter and biological systems and they give rise to intriguing collective phenomena. While it was reported that these interactions can facilitate force-driven particle motion over energetic barriers, here we show the opposite effect in a flow-driven system, i.e., that hydrodynamic interactions hinder transport across barriers. We demonstrate this result by combining experiments and theory. In the experiments, we drive colloidal particles using rotating optical traps, thus creating a vortex flow in the corotating reference frame. We observe a jamminglike decrease of particle currents with density for large barriers between traps. The theoretical model shows that this jamming arises from hydrodynamic interactions between the particles. The impact of hydrodynamic interactions is reversed compared to force-driven motion, suggesting that our findings are a generic feature of flow-driven transport. Hidrodinàmica Dinàmica de fluids Polímers Hydrodynamics Fluid dynamics Polymers Hydrodynamic Interactions Can Induce Jamming in Flow-Driven Systems