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Thread-based microfluidics: Flow patterns in homogeneous and heterogeneous microfiber bundles

Published on 29 March 2018
Thread-based microfluidics: Flow patterns in homogeneous and heterogeneous microfiber bundles
Description
 
Date 
Authors
Berthier J., Brakke K.A., Gosselin D., Berthier E., Navarro F.
Year2017-0459
Source-TitleMedical Engineering and Physics
Affiliations
Univ. Grenoble Alpes, Grenoble, France, CEA LETI, MlNATEC Campus, Grenoble, France, Mathematics Department, Susquehanna University, Selinsgrove, PA, United States, Tasso Inc., 1631 15th Ave. W, Seattle, WA, United States, Department of Chemistry, University of Washington, Seattle, WA, United States
Abstract
Thread-based microfluidics has recently seen considerable developments in the domain of portable diagnostic systems, smart bandages and tissue engineering. Similarly to paper-based microfluidics, thread-based microfluidics uses the wicking of fibers to move fluids. It has the advantage of confining and guiding the fluid along the yarns in a one, two or three dimensional space. A global approach to the motion of fluids in yarns and fiber bundles has already been reported in the literature based on the Lucas–Washburn–Rideal law. However no detailed investigation of the flow pattern inside the bundle has been conducted, depending on the internal structure of the bundle. Especially when the bundle possesses heterogeneous wetting properties, such as two different wetting regions interior and exterior, different flow patterns may exist. In this work, we perform a theoretical and numerical analysis of the different flow regimes for homogenous and heterogeneous fiber bundles. It is demonstrated that a limited number of fibers is sufficient for thread-based capillary flows, and that a caging of the flow can be achieved by realizing a lyophobic envelope. © 2017 IPEM
Author-Keywords
Heterogeneous yarns, Liquid caging, Thread-based microfluidics
Index-Keywords
Fibers, Microfluidics, Tissue engineering, Wetting, Yarn, Diagnostic systems, Fiber bundles, Flow regimes, Global approaches, Internal structure, Micro-fiber, Paper-based microfluidics, Wetting property, Flow patterns, elastomer, glass fiber, Article, calculation, capillary flow, contact angle, geometry, hydrophobicity, mathematical computing, microfluidics, priority journal
ISSN13504533
LinkLink

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