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 language | English |
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Pages (from-to) | 1207-1210 |
Number of pages | 4 |
Journal | Procedia Engineering |
Volume | 47 |
DOIs | |
State | Published - 2012 |
Event | 26th European Conference on Solid-State Transducers, EUROSENSOR 2012 - Krakow, Poland Duration: 9 Sep 2012 → 12 Sep 2012 |
Keywords
- Fresnel lenses
- Laser beam shaping
- Light scattering
- Nanoparticle detection