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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 10 — May. 14, 2007
  • pp: 6167–6176

Optical gradient flow focusing

Yiqiong Zhao, Bryant S. Fujimoto, Gavin D. M. Jeffries, Perry G. Schiro, and Daniel T. Chiu  »View Author Affiliations


Optics Express, Vol. 15, Issue 10, pp. 6167-6176 (2007)
http://dx.doi.org/10.1364/OE.15.006167


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Abstract

This paper describes a new method for carrying out flow cytometry, which employs optical gradient forces to guide and focus particles in the fluid flow. An elliptically shaped Gaussian beam was focused at the center of a microchannel to exert radiation pressure on suspended nanoparticles that are passing through the channel, such that these particles are guided to the center of the channel for efficient detection and sorting. To verify the efficiency of this optical-gradient-flow-focusing method, we present numerical simulations of the trajectories of the nanoparticles in both electroosmotic flow (EOF) and pressure-driven flow (PDF).

© 2007 Optical Society of America

OCIS Codes
(020.7010) Atomic and molecular physics : Laser trapping
(140.3300) Lasers and laser optics : Laser beam shaping
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(280.2490) Remote sensing and sensors : Flow diagnostics

ToC Category:
Trapping

History
Original Manuscript: March 1, 2007
Revised Manuscript: April 27, 2007
Manuscript Accepted: April 30, 2007
Published: May 3, 2007

Virtual Issues
Vol. 2, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Yiqiong Zhao, Bryant S. Fujimoto, Gavin D. Jeffries, Perry G. Schiro, and Daniel T. Chiu, "Optical gradient flow focusing," Opt. Express 15, 6167-6176 (2007)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-10-6167


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