NMR imaging of materials

Solid-state 27Al MRI and NMR thermometry for catalytic applications with conventional (liquids) MRI instrumentation and techniques

“…In contrast, MRI of rigid solids [8][9][10] is hampered to a significant extent due to the fact that low molecular mobility and anisotropic interactions lead to very broad NMR resonances (hundreds of kilohertz and more). This is especially true for MRI of quadrupolar (I > 1/ 2) nuclei for which quadrupolar broadening effects can easily lead to line widths in excess of 1 MHz.…”

Enhanced Overhauser contrast in proton–electron double-resonance imaging of the formation of an alginate hydrogel

“…The use of magnetic resonance imaging (MRI) in material science applications has become widespread over the years [1][2][3]. By looking at the image profiles obtained through properly designed experimental arrangements it is possible to assess aspects of the structure, the underlying mechanisms of transport and chemical kinetics of many interesting processes [1,2,4,5].…”

“…By looking at the image profiles obtained through properly designed experimental arrangements it is possible to assess aspects of the structure, the underlying mechanisms of transport and chemical kinetics of many interesting processes [1,2,4,5]. In particular, the possibility of monitoring these processes with spatial resolution constitutes a unique advantage of MRI over methods where only global temporal dynamics can be extracted.…”

Multidimensional Imaging Using Combined Stray Field and Pulsed Gradients

“…Magnetic resonance microscopy is proving to be an important characterization tool in materials science (1), most notably for studies of liquid transport in solids and porous media, for studies of liquid flow through pipes and vessels, and for studies of dynamic processes such as cooking and polymer cross-linking. In our own work, we have investigated single and binary mixtures of solvents ingressing polystyrene (2), creaming and drying of emulsions layers (3,4), and the drying and cross-linking of latex dispersion coatings (5).…”