2004/05/04 by Michael Reichert, Holger Stark · 1 citation
Engineering · Physics and Astronomy · #Micro and Nano Robotics #Orbital Angular Momentum in Optics #Particle Dynamics in Fluid Flows #cond-mat.soft
paper · pdf · doi:10.1088/0953-8984/16/38/023
published as J. Phys.: Condens. Matter 16, S4085 (2004) · (i) To be published in J. Phys.: Condens. Matter. (ii) Published version shall contain movies corresponding to figs. 5 and 8; for this preprint, these can be obtained from author (M.R., e-mail see article)
arxiv created 2004/05/04 · openalex publication_date 2004/09/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We model a system of particles suspended in a viscous fluid circle in optical vortices generated by holographic optical tweezer techniques (Curtis and Grier 2003 Phys. Rev. Lett. 90 133901) and show that hydrodynamic interactions between the circling particles determine their collective motion. We perform a linear-stability analysis to investigate the stability of regular particle clusters and illustrate the limit cycle to which the unstable modes converge. We clarify that drafting of particle doublets is essential for the understanding of the limit cycle.