Sin título
ROBERT DE SAINT VINCENT, Matthieu
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
School of Physics and Astronomy [St Andrews]
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Laboratoire Ondes et Matière d'Aquitaine [LOMA]
School of Physics and Astronomy [St Andrews]
ROBERT DE SAINT VINCENT, Matthieu
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
School of Physics and Astronomy [St Andrews]
< Leer menos
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
School of Physics and Astronomy [St Andrews]
Idioma
en
Article de revue
Este ítem está publicado en
Microfluidics and Nanofluidics. 2012-09, vol. 13, n° 2, p. 261-271
Springer Verlag
Resumen en inglés
We developed an optical, microfabrication-free approach for performing real-time measurements of individual droplet characteristics (frequency of production, velocity, and length) flowing in a transparent microfluidic ...Leer más >
We developed an optical, microfabrication-free approach for performing real-time measurements of individual droplet characteristics (frequency of production, velocity, and length) flowing in a transparent microfluidic channel. Our approach consists in an interpretation of the differential signal produced by a pair of photodiodes connected head-to-tail due to the variations of illumination at the passage of a droplet. We checked the relevance of this zero-background method by comparing results to video measurements, and observed a very good agreement at rates up to the kHz range. Moreover, since the measured values are stored in a simple text file, flow characterization over very long times (several hours) becomes accessible. We applied this facility to perform three examples of longterm studies: stationary regimes, transient regimes, and the effect of an external forcing. Several unexpected features, like long-period fluctuations, can thus be evidenced.< Leer menos
Palabras clave en inglés
Digital microfluidics
Flow characterization
Measurement in fluid dynamics
Real-time characterization
Transient regimes
Orígen
Importado de HalCentros de investigación