Collective behavior of the optically driven particles on a circular path

Shogo Okubo, Shuhei Shibata, Yasuyuki Kimura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


Microparticles such as colloids and microorganisms moving in viscous liquid interact with each other via hydrodynamic interaction and often exhibit complex collective behaviors. In this study, we observed the collective motion of many colloids moving along the same circular path in water by utilizing optical vortex. The characteristic collective motion including clustering and dissociation of the particles was observed and their dynamic patterns depend on the number of the particles on the path. By addition of different sized particles, the specific clusters can be selectively induced. Those experimental findings are reproduced by numerical simulation which takes into account the hydrodynamic interaction with Oseen approximation and the radial optical trapping force.

Original languageEnglish
Title of host publicationOptical Trapping and Optical Micromanipulation XI
EditorsGabriel C. Spalding, Kishan Dholakia
ISBN (Electronic)9781628411911
Publication statusPublished - 2014
EventOptical Trapping and Optical Micromanipulation XI - San Diego, United States
Duration: Aug 17 2014Aug 21 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherOptical Trapping and Optical Micromanipulation XI
Country/TerritoryUnited States
CitySan Diego

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Collective behavior of the optically driven particles on a circular path'. Together they form a unique fingerprint.

Cite this