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Multi-Scale Fluid-Solid Interactions in Architected and Natural Materials (MUSE): Dynamic Characterization of Fluids in Confined Space

Multidisciplinary research holds the key to solving many of the world’s most pressing problems. The MUSE program is a multidisciplinary and multi-institution collaborative Energy Frontier Research Center (EFRC) supported by the Department of Energy. The Center’s objectives range from fabrication and characterization of geomaterials with repeatable hierarchal heterogeneity, to understand the fundamental thermodynamics and transport properties of confined fluids. In this talk, we will first present an overview of the MUSE team, motivating challenges, and scientific objectives. Next, we will probe the thermophysical properties of confined fluids and in situ multi-scale characterization of geo-architected porous media. Steric and surface effects cause significant deviations between fluid properties (e.g., bubble points) from the bulk to confined state. To assess the physical and chemical origins of these properties on the molecular scale, we employ static and dynamic characterization tools. Specifically, we will discuss total neutron scattering to assess the fluid structure and thermodynamics, and nuclear magnetic resonance (NMR) to understand confined kinetic transport properties. To advance the common scientific theme of connecting fluid properties in confined and unconfined environments to the chemo-morphological characteristics of the materials, custom microreactors compatible with synchrotron characterization techniques were developed. This approach has facilitated cross-scale in-operando characterization of fluid-solid interactions using cross-scale X-ray and neutron scattering and tomography techniques our future experimental investigations are supported by predictions of wettability alterations at solid interfaces, and organization and transport of light and heavy hydrocarbon molecules, CO2 and CH4 confined in the nanopores of silica using molecular-scale models. These studies encompass the research philosophy of creating new knowledge by making geo-architected materials and modeling and measuring emergent physical, chemical, and reactive properties of nano-confined fluids in architected and natural materials. This approach is motivated by the need to elucidate the limitations of using Darcy’s description flow in unconventional nanoporous and disordered environments

Speakers: Greeshma Gadikota, PhD, Civil and Environmental Engineering, University of Wisconsin - MadisonMichael P. Hoepfner, PhD, Chemical Engineering, University of Utah

Monday, 04/15/19

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Free

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Green Earth Sciences Building

367 Panama St, Room 104
Stanford University
Stanford, CA 94305

Website: Click to Visit

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