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Related Experiment Video

Updated: Feb 24, 2026

Microfluidic Fabrication of Polymeric and Biohybrid Fibers with Predesigned Size and Shape
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Thread-based microfluidics: Flow patterns in homogeneous and heterogeneous microfiber bundles.

J Berthier1, K A Brakke2, D Gosselin1

  • 1Univ. Grenoble Alpes, F-38000 Grenoble, France; CEA LETI, MlNATEC Campus, F-38054 Grenoble, France.

Medical Engineering & Physics
|August 26, 2017
PubMed
Summary
This summary is machine-generated.

Thread-based microfluidics utilizes fiber wicking for fluid transport. This study reveals flow patterns in homogenous and heterogeneous bundles, showing a lyophobic envelope can control fluid behavior.

Keywords:
Heterogeneous yarnsLiquid cagingThread-based microfluidics

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Area of Science:

  • Microfluidics
  • Materials Science
  • Fluid Dynamics

Background:

  • Thread-based microfluidics leverages fiber wicking for fluid transport, similar to paper-based systems.
  • Applications include portable diagnostics, smart bandages, and tissue engineering.
  • Existing models describe global fluid motion but lack detailed analysis of internal flow patterns.

Purpose of the Study:

  • To theoretically and numerically analyze flow regimes in homogenous and heterogeneous fiber bundles.
  • To investigate the impact of internal bundle structure on fluid flow patterns.
  • To explore flow control in thread-based microfluidics, particularly with heterogeneous wetting properties.

Main Methods:

  • Theoretical analysis of fluid motion within fiber bundles.
  • Numerical simulations to model flow patterns.
  • Investigation of homogenous and heterogeneous wetting properties.

Main Results:

  • A limited number of fibers is sufficient for effective capillary flow in thread-based microfluidics.
  • Distinct flow patterns emerge in bundles with heterogeneous wetting properties.
  • A 'lyophobic envelope' can effectively cage or control fluid flow within the bundle.

Conclusions:

  • Understanding internal structure is crucial for optimizing thread-based microfluidic devices.
  • Heterogeneous wetting offers a mechanism for advanced fluid manipulation.
  • Lyophobic envelopes provide a method for precise fluid confinement in thread-based systems.