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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 8 — Aug. 2, 2012

Equilibrium orientations and positions of non-spherical particles in optical traps

Yongyin Cao, Alexander B Stilgoe, Lixue Chen, Timo A Nieminen, and Halina Rubinsztein-Dunlop  »View Author Affiliations

Optics Express, Vol. 20, Issue 12, pp. 12987-12996 (2012)

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Dynamic simulation is a powerful tool to observe the behavior of arbitrary shaped particles trapped in a focused laser beam. Here we develop a method to find equilibrium positions and orientations using dynamic simulation. This general method is applied to micro- and nano-cylinders as a demonstration of its predictive power. Orientation landscapes for particles trapped with beams of differing polarisation are presented. The torque efficiency of micro-cylinders at equilibrium in a plane is also calculated as a function of tilt angle. This systematic investigation elucidates in both the function and properties of micro- and nano-cylinders trapped in optical tweezers.

© 2012 OSA

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Optical Trapping and Manipulation

Original Manuscript: March 7, 2012
Revised Manuscript: May 3, 2012
Manuscript Accepted: May 4, 2012
Published: May 24, 2012

Virtual Issues
Vol. 7, Iss. 8 Virtual Journal for Biomedical Optics

Yongyin Cao, Alexander B Stilgoe, Lixue Chen, Timo A Nieminen, and Halina Rubinsztein-Dunlop, "Equilibrium orientations and positions of non-spherical particles in optical traps," Opt. Express 20, 12987-12996 (2012)

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