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Detection of the density of fine particulate matter employing laser beam divergence and inertia-dependent particle motion

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Abstract

We present a miniaturized sensor setup capable of determining the density of airborne particles employing size information provided by an enhanced light-scattering intensity ratio technique and inertia-dependent particle motion. The method is based on the particle density-dependent spatial particle spreading, measured as the time of flight using a divergent laser beam. Measurement results using polystyrene latex and silica particles in a size range of 500–1,600 nm show good agreement with theoretical estimations.

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Authors and Affiliations

  1. Siemens AG, Corporate Technology, Otto-Hahn-Ring 6, 81739, Munich, Germany

    R. Schrobenhauser, R. Strzoda, A. Hartmann & M. Fleischer

  2. Walter Schottky Institut, Technische Universität München, Am Coulombwall 4, 85748, Garching, Germany

    R. Schrobenhauser & M.-C. Amann

Authors
  1. R. Schrobenhauser
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  2. R. Strzoda
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  3. A. Hartmann
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  4. M. Fleischer
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  5. M.-C. Amann
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Correspondence to R. Schrobenhauser.

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Schrobenhauser, R., Strzoda, R., Hartmann, A. et al. Detection of the density of fine particulate matter employing laser beam divergence and inertia-dependent particle motion. Appl. Phys. B 117, 369–377 (2014). https://doi.org/10.1007/s00340-014-5844-8

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  • DOI: https://doi.org/10.1007/s00340-014-5844-8

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