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A bioinspired, passive microfluidic lobe filtration system.

Andrew S Clark1, Adriana San-Miguel1

  • 1Department of Chemical & Biomolecular Engineering, North Carolina State University, Raleigh, NC, USA. asanmig@ncsu.edu.

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|September 28, 2021
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Summary
This summary is machine-generated.

Bioinspired microfluidic lobe filters overcome clogging issues in filtration systems. These manta ray-inspired designs achieve high throughput and up to 99% efficiency for 10-30 μm particles.

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Area of Science:

  • Biomimetics
  • Microfluidics
  • Filtration Technology

Background:

  • Clogging limits the application of size-based microfluidic filtration systems in high-throughput and continuous processes.
  • Developing clog-resistant filtration methods is crucial for advancing microfluidic applications.

Purpose of the Study:

  • To design and evaluate novel microfluidic lobe filters inspired by manta ray filtration mechanisms.
  • To address clogging issues and enhance filtration performance in microfluidic systems.

Main Methods:

  • Development of two distinct microfluidic lobe filter designs based on manta ray bioinspiration.
  • Systematic investigation of various inlet flow rates and microparticle sizes (10-30 μm) for each filter design.
  • Utilizing ANSYS Fluent simulations to analyze fluid velocity profiles within the filters.

Main Results:

  • Filtration efficiency increases with fluid flow rate, indicating the importance of particle inertial effects.
  • Achieved microparticle filtration efficiencies of up to 99% at flow rates of 20 mL min⁻¹.
  • Demonstrated a two-fold or greater increase in microparticle concentration across tested flow rates (6-16 mL min⁻¹).

Conclusions:

  • Microfluidic lobe filters effectively filter particles in the 10-30 μm range with high throughput and precise control.
  • The study establishes a correlation between velocity profile characteristics and filtration efficiency, enabling predictive performance analysis.
  • These bioinspired filters offer a promising solution for clog-free, high-performance microfluidic filtration.