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01437 am a22002293u 4500 |
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113826 |
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|a Gupta, Ankur
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|a Massachusetts Institute of Technology. Department of Chemical Engineering
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|a Massachusetts Institute of Technology. Department of Mechanical Engineering
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|a Gupta, Ankur
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|a Lee, Hyundo
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|a Doyle, Patrick S
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|a Lee, Hyundo
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|a Doyle, Patrick S
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|a Controlled liquid entrapment over patterned sidewalls in confined geometries
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|b American Physical Society,
|c 2018-02-20T14:59:11Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/113826
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|a 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.
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|a en
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|a Article
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|t Physical Review Fluids
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