Zdjęcie: Speed of flow of droplets in microfluidic channels as a function of the capillary number, volume of droplets and contrast of viscosities

Speed of flow of droplets in microfluidic channels as a function of the capillary number, volume of droplets and contrast of viscosities

 We demonstrate an automated microfluidic system that screens the speeds of individual droplets at high precision and without human intervention. The results of measurements in channels of square cross-section (of width w = 360 μm) for four different values of the viscosities λ = μd/ μc = 0.3, 1, 3, 33, (the ratio of viscosity of droplet to viscosity of continuous phase), wide ranges of values of the capillary number Ca from 10-4 to 10-1, and wide ranges of lengths of droplets l = L/w from 0.8 to 30 show that the speed of droplets depends significantly both on l and on λ.

  • Autor: Jakiela S, Korczyk PM, Makulska S, Garstecki P
  • Rok: 2011
  • Źródło: Lab-on-a-Chip
  • Plik: pobierz

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