2012/03/15 by Marc Radu, Tanja Schilling, Radu, Marc +1
Engineering · Physics and Astronomy · #FOS: Physical sciences #Microfluidic and Bio-sensing Technologies #Orbital Angular Momentum in Optics #Particle Dynamics in Fluid Flows #Soft Condensed Matter (cond-mat.soft) #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.soft #cond-mat.stat-mech
paper · pdf · doi:10.48550/arxiv.1203.3441
12 pages, 7 figures, for proceedings of CODEF III conference
arxiv created 2012/03/15 · openalex publication_date 2012/03/15 · arxiv updated 2012/03/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Particles that are immersed in a fluid exchange momentum via the fluid, hence their Brownian motion is correlated. By means of multiparticle-collision dynamics simulations we study the interactions between two colloidal beads in a sheared fluid suspension. Recently, this topic has been addressed in experiments on colloidal particles trapped by optical tweezers in a microfluidic device [PRL, 103, 230602 (2009)] and theoretically by means of a Langevin model [Eur. Phys. J E, 33, 313 (2010)]. Although we neglect the rotational degrees of freedom of the colloids, and employ a very simple coupling between the colloids and the flow field, we can reproduce the experimental data and partly explain why it differs from theory.