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

R. Schrobenhauser; R. Strzoda; A. Hartmann; M. Fleischer; M. C. Amann

doi:10.1007/s00340-014-5844-8

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

R. Schrobenhauser, R. Strzoda, A. Hartmann, M. Fleischer, M. C. Amann

Chair of Semiconductor Technology

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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.

Original language	English
Pages (from-to)	369-377
Number of pages	9
Journal	Applied Physics B: Lasers and Optics
Volume	117
Issue number	1
DOIs	https://doi.org/10.1007/s00340-014-5844-8
State	Published - Oct 2014

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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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AU - Amann, M. C.

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

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