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dc.contributor.authorVavra, Eric D.
Zeng, Yongchao
Xiao, Siyang
Hirasaki, George J.
Biswal, Sibani L.
dc.date.accessioned 2018-07-16T17:48:56Z
dc.date.available 2018-07-16T17:48:56Z
dc.date.issued 2018
dc.identifier.citation Vavra, Eric D., Zeng, Yongchao, Xiao, Siyang, et al.. "Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications." Journal of Visualized Experiments, 131, (2018) Journal of Visualized Experiments: https://doi.org/10.3791/56592.
dc.identifier.urihttps://hdl.handle.net/1911/102428
dc.description.abstract Microfluidic devices are versatile tools for studying transport processes at a microscopic scale. A demand exists for microfluidic devices that are resistant to low molecular-weight oil components, unlike traditional polydimethylsiloxane (PDMS) devices. Here, we demonstrate a facile method for making a device with this property, and we use the product of this protocol for examining the pore-scale mechanisms by which foam recovers crude oil. A pattern is first designed using computer-aided design (CAD) software and printed on a transparency with a high-resolution printer. This pattern is then transferred to a photoresist via a lithography procedure. PDMS is cast on the pattern, cured in an oven, and removed to obtain a mold. A thiol-ene crosslinking polymer, commonly used as an optical adhesive (OA), is then poured onto the mold and cured under UV light. The PDMS mold is peeled away from the optical adhesive cast. A glass substrate is then prepared, and the two halves of the device are bonded together. Optical adhesive-based devices are more robust than traditional PDMS microfluidic devices. The epoxy structure is resistant to swelling by many organic solvents, which opens new possibilities for experiments involving light organic liquids. Additionally, the surface wettability behavior of these devices is more stable than that of PDMS. The construction of optical adhesive microfluidic devices is simple, yet requires incrementally more effort than the making of PDMS-based devices. Also, though optical adhesive devices are stable in organic liquids, they may exhibit reduced bond-strength after a long time. Optical adhesive microfluidic devices can be made in geometries that act as 2-D micromodels for porous media. These devices are applied in the study of oil displacement to improve our understanding of the pore-scale mechanisms involved in enhanced oil recovery and aquifer remediation.
dc.language.iso eng
dc.publisher Journal of Visualized Experiments
dc.rights 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.
dc.title Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications
dc.type Journal article
dc.citation.journalTitle Journal of Visualized Experiments
dc.citation.volumeNumber 131
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.3791/56592
dc.identifier.pmid 29364222
dc.type.publication publisher version
dc.citation.articleNumber e56592


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