Lens-less approach to image the optically-tweezed assembly

Gang Wang*, J. B. Ketterson

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


We present an alternative approach to image and analyze a large amount of optically-bound particles without using microscope objective lenses. The polystyrene spheres were trapped and patterned in the one dimensional optical potential traps formed by two counter-propagating laser beams. Diffraction patterns from such polystyrene sphere assembly were studied and the results were reported. This method offers a significantly larger field of view and faster analysis over the conventional high-power microscope-based imaging technique. The applications of such technique to investigate the statistic (macroscopic) behaviors of a large number of microscopic particles trapped in the optical field were proposed.

Original languageEnglish (US)
Article number593027
Pages (from-to)1-7
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2005
EventOptical Trapping and Optical Micromanipulation II - San Diego, CA, United States
Duration: Jul 31 2005Aug 4 2005


  • Diffraction
  • Imaging
  • Laser trapping
  • One-dimensional optical lattice
  • Optical tweezers
  • Self-assembly

ASJC Scopus subject areas

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


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