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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 15 — Aug. 1, 2009
  • pp: 2306–2308

Optofluidic particle concentration by a long-range dual-beam trap

S. Kühn, E. J. Lunt, B. S. Phillips, A. R. Hawkins, and H. Schmidt  »View Author Affiliations


Optics Letters, Vol. 34, Issue 15, pp. 2306-2308 (2009)
http://dx.doi.org/10.1364/OL.34.002306


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Abstract

Ultrahigh sensitivity detection of particles in solution implies the ability to detect at very low concentrations. At the single-particle level, this is achieved through fluorescence detection, reaching down to single fluorophores. Sensitivity may also be improved by concentrating many particles into a compact cluster, thus “integrating” the signal of many particles. We show how both ways can be combined on an optofluidic chip in a fully planar geometry utilizing counterpropagating liquid-core waveguide modes to form a loss-based optical trap. This all-optical concentrator can increase the concentration of particles by more than 2 orders of magnitude and also provides a convenient, nondispersive means of transport for particle ensembles.

© 2009 Optical Society of America

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(130.3120) Integrated optics : Integrated optics devices
(230.0230) Optical devices : Optical devices
(230.7390) Optical devices : Waveguides, planar
(350.0350) Other areas of optics : Other areas of optics
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Integrated Optics

History
Original Manuscript: February 5, 2009
Revised Manuscript: May 26, 2009
Manuscript Accepted: May 28, 2009
Published: July 23, 2009

Virtual Issues
Vol. 4, Iss. 10 Virtual Journal for Biomedical Optics

Citation
S. Kühn, E. J. Lunt, B. S. Phillips, A. R. Hawkins, and H. Schmidt, "Optofluidic particle concentration by a long-range dual-beam trap," Opt. Lett. 34, 2306-2308 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-15-2306


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