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Simultaneous visualization of the flow inside and around droplets generated in microchannels

Microfluidics and Nanofluidics, ISSN: 1613-4990, Vol: 16, Issue: 4, Page: 743-755
2014
  • 10
    Citations
  • 0
    Usage
  • 32
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    10
    • Citation Indexes
      10
  • Captures
    32

Article Description

This paper reports the visualization of droplet formation in co-flowing microfluidic devices using food-grade aqueous biopolymer-surfactant solutions as the dispersed droplet phase and sunflower oil as the continuous phase. Microparticle image velocimetry and streak imaging techniques are utilized to simultaneously recover the velocity profiles both within and around the dispersed phase during droplet formation and detachment. Different breakup mechanisms are found for Newtonian-Newtonian and non-Newtonian-Newtonian model water-in-oil emulsions, emphasizing the influence of process and material parameters such as the flow rates of both phases, interfacial tension, and the elastic properties of the non-Newtonian droplet phase on the droplet formation detachment dynamics. © 2013 Springer-Verlag Berlin Heidelberg.

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