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Area of Science:

  • Microfluidics
  • Chemical Engineering
  • Materials Science

Background:

  • The vortex fluidic device (VFD) is a microfluidic platform with diverse applications.
  • Understanding the thin liquid film dynamics within the VFD is crucial for optimizing its performance.
  • Previous studies have not fully characterized the liquid film behavior under VFD operating conditions.

Purpose of the Study:

  • To quantitatively determine the thickness and shape of the thin liquid film within a rotating vortex fluidic device.
  • To develop and validate a mathematical model for the liquid film dynamics.
  • To demonstrate the VFD's capability for scalable organic synthesis.

Main Methods:

  • Utilized neutron imaging to non-invasively measure the liquid film thickness in a quartz tube.
  • Developed a mathematical model to describe the liquid film's shape and behavior.
  • Experimentally validated the mathematical model against neutron imaging data.

Main Results:

  • Accurate measurements of the liquid film thickness were obtained using neutron imaging.
  • The mathematical model showed excellent agreement with experimental results.
  • The study identified optimal operating parameters, including a 45° tilt angle, for VFD processing.

Conclusions:

  • Neutron imaging and mathematical modeling provide a robust method for characterizing VFD liquid films.
  • The developed models and findings facilitate the optimization of VFD-mediated processes.
  • The vortex fluidic device is suitable for the intelligent scale-up of organic syntheses, as demonstrated by gram-scale production.