Nanoparticle detection in a miniaturized setup using laser beam shaping and dual angle information provided by fresnel ring lenses

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

Research output: Contribution to journalConference articlepeer-review

Abstract

We present a miniaturized optical setup using light scattering information of two avalanche photodiodes to measure the size of airborne nanoparticles. To increase the signal, two Fresnel ring lenses are used collecting scattered light in two angle intervals. The laser beam has been shaped to a vertical bar to increase the uniqueness of the detection as described below. Measurements show reasonable signal-to-noise ratios for 90 nm, 150 nm and 300 nm polystyrene latex nanoparticles.

Original languageEnglish
Pages (from-to)1207-1210
Number of pages4
JournalProcedia Engineering
Volume47
DOIs
StatePublished - 2012
Event26th European Conference on Solid-State Transducers, EUROSENSOR 2012 - Krakow, Poland
Duration: 9 Sep 201212 Sep 2012

Keywords

  • Fresnel lenses
  • Laser beam shaping
  • Light scattering
  • Nanoparticle detection

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