2008/03/31 by Sven van Teeffelen, Hartmut Löwen · 7 citations
Engineering · Materials Science · Physics and Astronomy · #Micro and Nano Robotics #Microfluidic and Bio-sensing Technologies #Pickering emulsions and particle stabilization #cond-mat.soft #cond-mat.stat-mech
paper · pdf · doi:10.1103/physreve.78.020101
published as Phys. Rev. E 78, 020101(R) (2008) · v2: changed title from "The fate of a Brownian circle swimmer"; mainly changes of introduction and conclusions
openalex publication_date 2008/08/15 · arxiv created 2008/08/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
Self-propelled particles move along circles rather than along a straight line when their driving force does not coincide with their propagation direction. Examples include confined bacteria and spermatozoa, catalytically driven nanorods, active, anisotropic colloidal particles and vibrated granulates. Using a non-Hamiltonian rate theory and computer simulations, we study the motion of a Brownian "circle swimmer" in a confining channel. A sliding mode close to the wall leads to a huge acceleration as compared to the bulk motion, which can further be enhanced by an optimal effective torque-to-force ratio.