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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 14 — Jul. 15, 2010
  • pp: 2493–2495

Quantitative measurements of absolute dielectrophoretic forces using optical tweezers

Yoochan Hong, Jin-Woo Pyo, Sang Hyun Baek, Sang Woo Lee, Dae Sung Yoon, Kwangsoo No, and Beop-Min Kim  »View Author Affiliations

Optics Letters, Vol. 35, Issue 14, pp. 2493-2495 (2010)

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Optical tweezers were used for quantitative measurement of the absolute dielectrophoresis (DEP) forces acting on polystyrene microparticles. The electrodes and tweezers were configured to create one-dimensional DEP forces acting perpendicular to the tweezers’ beam. The influences of various external factors, such as applied voltage frequency, conductivity of the medium, and particle size on the measurement were estimated. By accounting for these factors, actual measurements were in close agreement with theoretical predictions. Our results show that the optical tweezers may serve as a unique tool for the measurement of DEP forces in various applications.

© 2010 Optical Society of America

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Lasers and Laser Optics

Original Manuscript: April 9, 2010
Revised Manuscript: May 20, 2010
Manuscript Accepted: May 25, 2010
Published: July 15, 2010

Virtual Issues
Vol. 5, Iss. 12 Virtual Journal for Biomedical Optics

Yoochan Hong, Jin-Woo Pyo, Sang Hyun Baek, Sang Woo Lee, Dae Sung Yoon, Kwangsoo No, and Beop-Min Kim, "Quantitative measurements of absolute dielectrophoretic forces using optical tweezers," Opt. Lett. 35, 2493-2495 (2010)

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