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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 3 — Feb. 29, 2012

Backward transport of nanoparticles in fluidic flow

Chong Xu, Hongxiang Lei, Yao Zhang, and Baojun Li  »View Author Affiliations

Optics Express, Vol. 20, Issue 3, pp. 1930-1938 (2012)

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We demonstrate a backward transport of polystyrene (PS) particles (713-nm in diameter) in a pressure-driven fluidic flow using an optical fiber with a diameter of 710 nm. When a light of 980-nm wavelength was launched into the fiber in the opposite direction of the flow, the PS particles near the fiber were attracted onto the fiber and transported along the propagation direction of the light. The relationship between the velocity of the transported PS particles and the velocity of the flow at different input optical powers was investigated. Numerical analyses on both the optical field and the fluid field were carried out. The particle-size dependence of backward transport capability has also been investigated.

© 2012 OSA

OCIS Codes
(350.4855) Other areas of optics : Optical tweezers or optical manipulation
(310.6628) Thin films : Subwavelength structures, nanostructures

ToC Category:
Optical Trapping and Manipulation

Original Manuscript: October 28, 2011
Revised Manuscript: December 29, 2011
Manuscript Accepted: December 31, 2011
Published: January 13, 2012

Virtual Issues
Vol. 7, Iss. 3 Virtual Journal for Biomedical Optics

Chong Xu, Hongxiang Lei, Yao Zhang, and Baojun Li, "Backward transport of nanoparticles in fluidic flow," Opt. Express 20, 1930-1938 (2012)

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