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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 12 — Dec. 19, 2012

Integrated optofluidic system for monitoring particle mass concentrations based on planar emitter–receiver units

Meike Hofmann, Ralf Müller, Sebastian Stoebenau, Thomas Stauden, Olaf Brodersen, and Stefan Sinzinger  »View Author Affiliations


Applied Optics, Vol. 51, Issue 32, pp. 7800-7809 (2012)
http://dx.doi.org/10.1364/AO.51.007800


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Abstract

We demonstrate an integrated optofluidic system for monitoring the particle mass concentration and the Sauter mean diameter of polydisperse flowing suspensions of water and standardized test dust. For optimum integration, a planar emitter–receiver unit is developed and fabricated on Si technology. A vertical cavity surface emitting laser at 850 nm serves as light source, and monolithically integrated segmented photodiodes detect both the attenuation of the primary light beam and the scattered light. The optical system is integrated into a planar transparent polymethylmethacrylate substrate by micromilling of an optical freeform surface and electron beam evaporation of reflective layers following the concept of planar integrated free-space optical systems. We are able to detect 1mg/L of the standards ISO 12103-A2 (fine test dust), -A3 (medium test dust), and -A4 (coarse test dust) and to determine the Sauter mean diameter of the particle size distribution.

© 2012 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(280.2490) Remote sensing and sensors : Flow diagnostics
(290.5850) Scattering : Scattering, particles

ToC Category:
Scattering

History
Original Manuscript: August 2, 2012
Revised Manuscript: September 24, 2012
Manuscript Accepted: September 24, 2012
Published: November 8, 2012

Virtual Issues
Vol. 7, Iss. 12 Virtual Journal for Biomedical Optics

Citation
Meike Hofmann, Ralf Müller, Sebastian Stoebenau, Thomas Stauden, Olaf Brodersen, and Stefan Sinzinger, "Integrated optofluidic system for monitoring particle mass concentrations based on planar emitter–receiver units," Appl. Opt. 51, 7800-7809 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-51-32-7800

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