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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 5, Iss. 14 — Nov. 16, 2010

Structured light spots projected by a Dammann grating with high power efficiency and uniformity for optical sorting

Xiaodong Sun, Yuyang Sun, Jing Bu, Siwei Zhu, and X.-C. Yuan  »View Author Affiliations

Applied Optics, Vol. 49, Issue 28, pp. 5437-5443 (2010)

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We report a method for microfluidic multiple trapping and continuous sorting of microparticles using an optical potential landscape projected by a Dammann grating, enabling a high power-efficient approach to forming a composite two-dimensional spots array with high uniformity. The Dammann grating is fabricated in a photoresist by optical lithography. It is employed to create an optical lattice for multiple optical trapping and sorting in a mixture of polymer particles ( n = 1.59 ) and silica particles ( n = 1.42 ) with the same diameters of 3.1 μm . In addition to the exponential selectivity by the projected optical landscapes, the proposed microfluidic sorting system has advantages in terms of high power efficiency and high uniformity due to the Dammann grating.

© 2010 Optical Society of America

OCIS Codes
(120.4610) Instrumentation, measurement, and metrology : Optical fabrication
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: May 5, 2010
Revised Manuscript: July 24, 2010
Manuscript Accepted: August 17, 2010
Published: September 28, 2010

Virtual Issues
Vol. 5, Iss. 14 Virtual Journal for Biomedical Optics

Xiaodong Sun, Yuyang Sun, Jing Bu, Siwei Zhu, and X.-C. Yuan, "Structured light spots projected by a Dammann grating with high power efficiency and uniformity for optical sorting," Appl. Opt. 49, 5437-5443 (2010)

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