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Article Dans Une Revue Optics Express Année : 2022

Microfluidic lab-on-a-chip characterization of nano- to microparticles suspensions by light extinction spectrometry

Isaac Rodríguez-Ruiz
Fabrice Lamadie
Fabrice R.A. Onofri

Résumé

The analysis of nano-and microparticle suspensions with micro systems affords improved space-time yields, selectivity, reaction residence times and conversions capabilities. These capabilities are of primary importance in various fields of research and industry. The few microfluidic lab-on-a-chip approaches that have been developed are essentially designed to analyse fluid phases or involve the use of benchtop particle sizing instruments. We report a novel microscale approach to characterize the particle size distribution and absolute concentration of colloidal suspensions. The method is based on a photonic lab-on-a-chip with three scale-specific detection channels to record simultaneous light extinction spectra. Experiments carried out on particle standards with sizes ranging from 30 nm to 0.5 µm and volume concentrations of 1 to 1000ppm, clearly demonstrate the value and potential of the proposed method.
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Dates et versions

hal-03529771 , version 1 (18-01-2022)

Identifiants

Citer

F. R.A. Onofri, Isaac Rodríguez-Ruiz, Fabrice Lamadie, Fabrice R.A. Onofri. Microfluidic lab-on-a-chip characterization of nano- to microparticles suspensions by light extinction spectrometry. Optics Express, 2022, 30 (2), pp.2981. ⟨10.1364/OE.444044⟩. ⟨hal-03529771⟩
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