Speaker
Description
Nuclear magnetic resonance (NMR) allows for non-invasive measurement of the dynamics of liquids in complex porous structures. In high-field NMR, measurement of restricted molecular motion and changes in magnetic relaxation times can characterize pore size and connectivity. Molecular diffusion measurements are utilized to identify the restricted motion of water after ingress into the pore structure of a beeswax model construct. With this measurement, pore size, diffusion length scale, and structure tortuosity can be determined. T2 relaxation measurements are used to detect the transient penetration of bulk water through the pore matrix and characterize the structural changes in the beeswax matrix due to the influx of water. The data indicate novel new applications to soft matter systems of NMR methods that are well established in standard solid matrix porous media.
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