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29 March 2024
 
  » arxiv » cond-mat/0405051

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Circling particles and drafting in optical vortices
Michael Reichert ; Holger Stark ;
Date 4 May 2004
Journal J. Phys.: Condens. Matter 16, S4085 (2004) DOI: 10.1088/0953-8984/16/38/023
Subject Soft Condensed Matter | cond-mat.soft
AbstractParticles suspended in a viscous fluid circle in optical vortices generated by holographic optical-tweezer techniques [Curtis J E and Grier D G 2003 Phys. Rev. Lett. 90 133901]. We model this system 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.
Source arXiv, cond-mat/0405051
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