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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 15 — May. 20, 2003
  • pp: 2708–2715

Optical tweezers and fluid characteristics of an optical rotator with slopes on the surface upon which light is incident and a cylindrical body

Hiroo Ukita and Kenji Nagatomi  »View Author Affiliations


Applied Optics, Vol. 42, Issue 15, pp. 2708-2715 (2003)
http://dx.doi.org/10.1364/AO.42.002708


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Abstract

The characteristics of the optical trapping force, optical torque, and viscous drag force for a newly proposed cylindrical optical rotator are analyzed. The optical trapping force and torque are evaluated by use of a ray optics model for both parallel and focused laser beam illumination. The drag force is calculated from computational fluid dynamics to be the sum of the components of both the pressure and the shearing stress on all the surfaces of the rotator. We analyze the rotation rate by balancing the optical torque with the drag force. A cylindrical optical rotator is expected to rotate at a high speed because of its highly efficient generation of optical torque and its small viscous drag force.

© 2003 Optical Society of America

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(220.2740) Optical design and fabrication : Geometric optical design
(350.3950) Other areas of optics : Micro-optics

History
Original Manuscript: July 10, 2002
Revised Manuscript: December 17, 2002
Published: May 20, 2003

Citation
Hiroo Ukita and Kenji Nagatomi, "Optical tweezers and fluid characteristics of an optical rotator with slopes on the surface upon which light is incident and a cylindrical body," Appl. Opt. 42, 2708-2715 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-15-2708


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References

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  9. H. Ukita, M. Kanehira, “A shuttlecock optical rotator—its design, fabrication and evaluation for a micro-fluidic mixer,” IEEE J. Sel. Top. Quantum Electron. 8, 111–117 (2002). [CrossRef]
  10. K. Nagatomi, H. Ukita, “Improvement in optical rotation rate of a cylindrical micro-objects by incident beam profiles,” presented at the Conference on Optical MEMS and Their Applications (MOEMS ’97), Nara, Japan, 18–21 November 1997.
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