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Investigation on the Possibility of Designing an Educational Dynamic Light Scattering Device for Sizing Particles Suspended in Air

Author

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  • Chicea Dan

    (Research Center for the Physics of Complex Systems, Lucian Blaga University of Sibiu, Dr. Ion Ratiu str., no. 5-7, Sibiu, 550012, Romania)

  • Leca Cristian

    (Research Center for the Physics of Complex Systems, Lucian Blaga University of Sibiu, Dr. Ion Ratiu str., no. 5-7, Sibiu, 550012, Romania)

Abstract

If a light beam meets a fluid that contains scattering centers randomly distributed in suspension, light is scattered by each of them. If the light source is coherent, the scattered waves will be also coherent, therefore they will interfere. The fluctuations of the far-field interference signal, once recorded and digitized, become a time series that can be later on analyzed to produce the average size of the suspended particles or the size distribution. The technique wears the name of Dynamic Light Scattering. We present the results of our investigation on the possibility of using an educational model, made of low-cost, conventional electronics, for recording the time signal of light scattered by particles suspended in the air as the carrier fluid. The device can be used in measuring the particle size in exhaust gases of conventional power plants or automobile engines.

Suggested Citation

  • Chicea Dan & Leca Cristian, 2019. "Investigation on the Possibility of Designing an Educational Dynamic Light Scattering Device for Sizing Particles Suspended in Air," Balkan Region Conference on Engineering and Business Education, Sciendo, vol. 3(1), pages 154-161, October.
  • Handle: RePEc:vrs:brcebe:v:3:y:2019:i:1:p:154-161:n:18
    DOI: 10.2478/cplbu-2020-0018
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