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Related Experiment Video

Updated: Jun 9, 2026

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
11:38

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

Frequency-induced stratification in viscoelastic microfluidics.

E Corvera Poiré1, A Hernández-Machado

  • 1Departamento de Física y Química Teórica, Facultad de Química, Universidad Nacional Autónoma de México, México DF 04510, México. eugenia.corvera@gmail.com

Langmuir : the ACS Journal of Surfaces and Colloids
|September 9, 2010
PubMed
Summary

We demonstrate a microfluidic method to stratify viscoelastic fluids using sound frequencies. This technique confines tracer particles in distinct layers, enabling advanced applications in microfluidic devices.

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Area of Science:

  • Microfluidics
  • Fluid Dynamics
  • Rheology

Background:

  • Microfluidic devices offer precise control over fluid behavior.
  • Viscoelastic fluids exhibit complex flow properties.
  • Stratification is crucial for separating and analyzing particles.

Purpose of the Study:

  • To introduce a novel microfluidic mechanism for inducing viscoelastic fluid stratification.
  • To enable tailored layering for particle confinement and separation.
  • To provide theoretical predictions for experimental realization.

Main Methods:

  • Applying a dynamic pressure gradient at audible frequencies.
  • Utilizing analytical results to model fluid behavior.
  • Investigating the relationship between diffusion, fluid properties, and channel dimensions.

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Protocol for Biofilm Streamer Formation in a Microfluidic Device with Micro-pillars
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Published on: August 20, 2014

Mechano-Node-Pore Sensing: A Rapid, Label-Free Platform for Multi-Parameter Single-Cell Viscoelastic Measurements
05:49

Mechano-Node-Pore Sensing: A Rapid, Label-Free Platform for Multi-Parameter Single-Cell Viscoelastic Measurements

Published on: December 2, 2022

Related Experiment Videos

Last Updated: Jun 9, 2026

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
11:38

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

Protocol for Biofilm Streamer Formation in a Microfluidic Device with Micro-pillars
07:19

Protocol for Biofilm Streamer Formation in a Microfluidic Device with Micro-pillars

Published on: August 20, 2014

Mechano-Node-Pore Sensing: A Rapid, Label-Free Platform for Multi-Parameter Single-Cell Viscoelastic Measurements
05:49

Mechano-Node-Pore Sensing: A Rapid, Label-Free Platform for Multi-Parameter Single-Cell Viscoelastic Measurements

Published on: December 2, 2022

Main Results:

  • Achieved controlled stratification of viscoelastic fluids into identical, parallel layers.
  • Identified 2D zero-velocity planes separating the fluid layers.
  • Established conditions for tracer particle confinement based on diffusion coefficients and fluid properties.

Conclusions:

  • The proposed mechanism allows for tunable stratification in microchannels.
  • This method facilitates the confinement of particles with low diffusion coefficients.
  • Potential applications include micro-total analysis systems and microelectromechanical systems (MEMS).