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Proceedings 2017, 1(4), 507; doi:10.3390/proceedings1040507

Optical Feedback Interferometry Flowmetry Sensor in Microfluidics Chip

Laboratory for analysis and architecture of systems, Université de Toulouse, CNRS, INP, INSA, UPS, 31400 Toulouse, France
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
Author to whom correspondence should be addressed.
Published: 18 August 2017
(This article belongs to the Proceedings of Eurosensors 2017)
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Optical feedback interferometry (OFI) applied to microscale flow sensing is studied theoretically and experimentally. A new model is investigated that predicts the OFI signal. This model is based on the Lang-Kobayashi equations and highlights the importance of the laser beam propagation and the laser-particle scattering performances. For the first time, the angle distribution of the scattered light is involved in the model. The model evaluates the impact on the OFI signal of the light propagation in the micro-scale channel geometry. The flow rate measurement shows good agreement with the model.
Keywords: optical feedback interferometry; microfluidics; laser sensors; ray tracing simulation optical feedback interferometry; microfluidics; laser sensors; ray tracing simulation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhao, Y.; Perchoux, J.; Camps, T.; Bardinal, V. Optical Feedback Interferometry Flowmetry Sensor in Microfluidics Chip. Proceedings 2017, 1, 507.

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