Droplet motion in microfluidic networks: Hydrodynamic interactions and pressure-drop measurements
ENGL, Wilfried
Laboratoire du Futur [LOF]
Centre de physique moléculaire optique et hertzienne [CPMOH]
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Laboratoire du Futur [LOF]
Centre de physique moléculaire optique et hertzienne [CPMOH]
ENGL, Wilfried
Laboratoire du Futur [LOF]
Centre de physique moléculaire optique et hertzienne [CPMOH]
< Leer menos
Laboratoire du Futur [LOF]
Centre de physique moléculaire optique et hertzienne [CPMOH]
Idioma
en
Article de revue
Este ítem está publicado en
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics. 2009-07, vol. 80, n° 1, p. 16317
American Physical Society
Resumen en inglés
We present experimental, numerical, and theoretical studies of droplet flows in hydrodynamic networks. Using both millifluidic and microfluidic devices, we study the partitioning of monodisperse droplets in an asymmetric ...Leer más >
We present experimental, numerical, and theoretical studies of droplet flows in hydrodynamic networks. Using both millifluidic and microfluidic devices, we study the partitioning of monodisperse droplets in an asymmetric loop. In both cases, we show that droplet traffic results from the hydrodynamic feedback due to the presence of droplets in the outlet channels. We develop a recently-introduced phenomenological model [W. Engl , Phys. Rev. Lett. 95, 208304 (2005)] and successfully confront its predictions to our experimental results. This approach offers a simple way to measure the excess hydrodynamic resistance of a channel filled with droplets. We discuss the traffic behavior and the variations in the corresponding hydrodynamic resistance length Ld and of the droplet mobility β , as a function of droplet interdistance and confinement for channels having circular or rectangular cross sections.< Leer menos
Palabras clave en inglés
Flows in ducts and channels
Complex fluids and colloidal systems
Orígen
Importado de HalCentros de investigación