Controlled liquid entrapment over patterned sidewalls in confined geometries
Name
PhysRevFluids.2.094007.pdf
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3.27 MB
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Adobe PDF
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Author(s)
Gupta, Ankur
Lee, Hyundo
Doyle, Patrick S
Date Issued
September 2017
Journal
Physical Review Fluids
Publisher
American Physical Society
Citation
Gupta, Ankur, et al. “Controlled Liquid Entrapment over Patterned Sidewalls in Confined Geometries.” Physical Review Fluids, vol. 2, no. 9, Sept. 2017. © 2017 American Physical Society
Version
Final published version
Abstract
Liquid entrapment over patterned surfaces has applications in diagnostics, oil recovery, and printing processes. Here we study the process of oil displacement upon sequential injection of water over a photopatterned structure in a confined geometry. By varying the amplitude and frequency of triangular and sinusoidal patterns, we are able to completely remove oil or trap oil in varying amounts. We present a theoretical model based on geometrical arguments that successfully predicts the criterion for liquid entrapment and provides insights into the parameters that govern the physical process.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevFluids.2.094007
