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- W2897556919 abstract "Fluid flow in porous rocks is commonly capillary driven and thus, dependent on the surface characteristics of rock grains and in particular the connectivity of corners and crevices in which fluids reside. Traditional microfluidic fabrication techniques do not provide a connected pathway of crevices that are essential to mimic multiphase flow in rocks. Here, geo-material microfluidic devices with connected pathways of corners and crevices were created by functionalising Polydimethylsiloxane (PDMS) with rock minerals. A novel fabrication process that provides attachment of rock minerals onto PDMS was demonstrated. The geo-material microfluidic devices were compared to carbonate and sandstone rocks by using energy dispersive X-ray spectroscopy, scanning electron microscopy (SEM), contact angle measurements, and a surface profilometer. Based on SEM coupled with energy-dispersive X-ray spectrometry (SEM-EDS) analyses, roughness measurements, contact angle, wettability, and roughness were comparable to real rocks. In addition, semivariograms showed that mineral deposition across the different geo-material devices was nearly isotropic. Lastly, important multiphase flow phenomena, such as snap-off and corner flow mechanisms, equivalent to those occurring in reservoir rocks have been visualised. The presented approach can be used to visualise rock-fluid interactions that are relevant to subsurface engineering applications, such as hydrocarbon recovery and CO2 sequestration." @default.
- W2897556919 created "2018-10-26" @default.
- W2897556919 creator A5000276377 @default.
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- W2897556919 creator A5086586936 @default.
- W2897556919 date "2018-10-19" @default.
- W2897556919 modified "2023-10-12" @default.
- W2897556919 title "Functionalisation of Polydimethylsiloxane (PDMS)- Microfluidic Devices coated with Rock Minerals" @default.
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- W2897556919 doi "https://doi.org/10.1038/s41598-018-33495-8" @default.
- W2897556919 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6195554" @default.
- W2897556919 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30341346" @default.
- W2897556919 hasPublicationYear "2018" @default.
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