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Parallelization of microfluidic flow-focusing devices.

Esther Amstad1,2, Xiaoming Chen3, Max Eggersdorfer1

  • 1School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA.

Physical Review. E
|May 17, 2017
PubMed
Summary
This summary is machine-generated.

Parallelizing microfluidic flow-focusing devices is improved by reversing the outer phase injection. This enhances device throughput and robustness for droplet generation applications.

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Area of Science:

  • Fluid dynamics
  • Microfluidics
  • Droplet generation

Background:

  • Microfluidic flow-focusing devices provide precise control over fluid flow for generating droplets with uniform sizes.
  • Scaling up these devices for higher throughput is challenging due to compromised operational robustness in parallel configurations.

Purpose of the Study:

  • To investigate a method for improving the parallelization of microfluidic flow-focusing devices.
  • To enhance the throughput and robustness of droplet generation using microfluidic systems.

Main Methods:

  • Utilized microfluidic flow-focusing devices with a modified injection configuration.
  • Investigated the transition from squeezing to dripping regimes under varying flow rates.
  • Analyzed the impact of counter-current outer phase injection on drop formation dynamics.

Main Results:

  • Demonstrated that injecting the outer phase in the opposite direction to the inner phase facilitates parallelization.
  • Observed a shift in the critical flow rate for regime transition towards higher values.
  • This configuration enhances the robustness and scalability of parallel microfluidic drop makers.

Conclusions:

  • Reversed outer phase injection is a viable strategy for robustly scaling microfluidic flow-focusing devices.
  • This approach enables higher throughput droplet generation essential for various applications.
  • Optimized microfluidic device design can overcome throughput limitations in parallel operations.