Spatial Encoding with Single-sided NMR

Single-sided NMR is an important non-invasive, non-destructive technique used to characterize molecules. Specifically, single-sided NMR has applications in biomedicine, elastomers, solid polymers, moisture in porous media, and cultural heritage. Single-sided magnets can be used to analyze T2 relaxation to gauge the relative motion of molecules in the sample. However, the are few methods to characterize heterogeneous samples with single-sided NMR. Most experiments take one set of data for the entire sample regardless if the sample is heterogeneous or homogeneous. New methods to spatially encode with single-sided NMR were explore and characterized based on their advantages and disadvantages. These methods include hard pulses, profiles, soft pulses, and Hadamard sequencing. The methods discretely selective excite specific regions of the sample. The T2 relaxation is measure for each slice within the sample allowing for characterization of heterogeneous samples