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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 25 — Dec. 12, 2005
  • pp: 10406–10415

Enhanced optical chromatography in a PDMS microfluidic system

A. Terray, J. Arnold, and S. J. Hart  »View Author Affiliations


Optics Express, Vol. 13, Issue 25, pp. 10406-10415 (2005)
http://dx.doi.org/10.1364/OPEX.13.010406


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Abstract

The purely refractive index driven separation of uniformly sized polystyrene, n = 1.59 and poly(methylmethacrylate), n = 1.49 in an optical chromatography system has been enhanced through the incorporation of a custom poly(dimethysiloxane) (PDMS) microfluidic system. A customized channel geometry was used to create separate regions with different linear flow velocities tailored to the specific application. These separate flow regions were then used to expose the entities in the separation to different linear flow velocities thus enhancing their separation relative to the same separation in a constant velocity flow environment. A microbiological sample containing spores of the biological warfare agent, Bacillus anthracis, and a common environmental interferent, mulberry pollen, was investigated to test the use of tailored velocity regions. These very different samples were analyzed simultaneously only through the use of tailored velocity regions.

© 2005 Optical Society of America

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(170.1420) Medical optics and biotechnology : Biology

ToC Category:
Research Papers

Virtual Issues
Vol. 1, Iss. 1 Virtual Journal for Biomedical Optics

Citation
A. Terray, J. Arnold, and S. J. Hart, "Enhanced optical chromatography in a PDMS microfluidic system," Opt. Express 13, 10406-10415 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-25-10406


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