Assembling and dynamic ejection of polystyrene particles in CW laser trapping at solution surface

Jia Syun Lu, Tetsuhiro Kudo, Hiroshi Masuhara*

*Corresponding author for this work

Research output: Contribution to journalConference article

Abstract

Assembling and ejection dynamics of polystyrene microparticles of 1 micrometer is revealed by applying CW laser trapping at solution surface. Initially a concentric circle-like assembly is rapidly prepared, giving a size much larger than the focus. Assembling evolves, showing some fluctuation in its size, which is accompanied with ejecting of some microparticles. The concentric-like structure is transformed into a hexagonal packing structure, then the ejection is much suppressed. Microparticles are ejected in a linearly aligned manner and its speed is slowed down with time and the distance. Assembling and ejection dynamics is considered in terms of light scattering of the trapping laser.

Original languageEnglish
Article numberOMC-4-01
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume11141
StatePublished - 1 Jan 2019
EventOptical Manipulation and Structured Materials Conference 2019 - Yokohama, Japan
Duration: 22 Apr 201926 Apr 2019

Keywords

  • Assembling and ejection
  • Laser trapping
  • Optical tweezers
  • Polystyrene particle
  • Solution surface

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