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Related Experiment Video

Updated: Jul 7, 2025

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
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Particle Tracking and Micromixing Performance Characterization with a Mobile Device.

Edisson A Naula Duchi1, Héctor Andrés Betancourt Cervantes1, Christian Rodrigo Yañez Espinosa1

  • 1Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Monterrey 64849, Mexico.

Sensors (Basel, Switzerland)
|December 23, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces a new particle tracking method for characterizing mixing in microfluidic devices with multiple inlets. The developed mobile application (MIQUOD) offers a novel way to assess mixing performance for complex fluid combinations.

Keywords:
microfluidicsmicromixersmixing indexmobile applicationopen sourceparticle trackingpoint of caresplit and recombine (SAR)

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Area of Science:

  • Microfluidics
  • Chemical Engineering
  • Analytical Chemistry

Background:

  • Characterizing mixing in microfluidic devices is crucial for optimizing reactions and processes.
  • Existing methods often focus on two-inlet systems, limiting their applicability to multi-reagent scenarios.
  • A need exists for robust methods to evaluate mixing efficiency in complex microfluidic systems.

Purpose of the Study:

  • To develop and validate a novel particle tracking-based methodology for characterizing mixing in microfluidic devices.
  • To present a free, open-source mobile application (MIQUOD) for implementing this methodology.
  • To propose a new mixing index for particles (mp) suitable for multi-reagent systems.

Main Methods:

  • Particle tracking algorithm implemented on an Android mobile application (MIQUOD).
  • Numerical simulations using COMSOL Multiphysics for validation.
  • Experimental testing on 2D split-and-recombine and 3D sinusoidal groove micromixers with multi-colored microparticles.
  • Evaluation of eleven performance metrics using concentration and particle track data.

Main Results:

  • The MIQUOD application successfully characterizes mixing performance across various Reynolds numbers and geometrical features.
  • The proposed particle tracking method provides an alternative to traditional intensity-based homogeneity measurements.
  • A new particle-based mixing index (mp) was developed and validated for multi-reagent mixing scenarios.

Conclusions:

  • The developed particle tracking methodology and MIQUOD application offer a versatile tool for microfluidic mixing characterization.
  • The new mixing index (mp) effectively quantifies mixing performance in complex multi-inlet systems.
  • This approach enhances the ability to design and optimize microfluidic devices for diverse chemical and biological applications.