title: Low-field single-sided NMR for one-shot 1D-mapping: Application to membranes.
abstract: Many single-sided permanent magnet NMR systems have been proposed over the years allowing for 1D proton-density profiling, diffusion measurements and relaxometry. In this manuscript we make use of a recently published unilateral magnet for low-field NMR exhibiting an extremely uniform magnetic field gradient with moderate strength and cylindrical symmetry, allowing for a well-defined sweet spot. Combined with a goniometer, our system is used to characterize precisely the uniformity of its gradient and to achieve micrometric precision 1D profiling, as well as spatially localized relaxometry and diffusometry on thick (∼150μm) membrane samples. Profiling with this magnet did not require repositioning of the samples with respect to the 1D tomograph.
authors.affiliation: Laboratoire Léon Brillouin, CNRS-CEA (UMR 12), CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France; Laboratoire de Physique des Solides, (UMR CNRS 8502), Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay, France.
authors.forename: Patrick
authors.initials: P
authors.lastname: Judeinstein
authors.affiliation: Laboratoire Léon Brillouin, CNRS-CEA (UMR 12), CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France.
authors.forename: Filippo
authors.initials: F
authors.lastname: Ferdeghini
authors.affiliation: Laboratoire Léon Brillouin, CNRS-CEA (UMR 12), CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Oliveira-Silva
authors.affiliation: Laboratoire Léon Brillouin, CNRS-CEA (UMR 12), CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France.
authors.forename: Jean-Marc
authors.initials: JM
authors.lastname: Zanotti
authors.affiliation: NIMBE, CEA-CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France. Electronic address: dimitrios.sakellariou@cea.fr.
authors.forename: Dimitrios
authors.initials: D
authors.lastname: Sakellariou
keywords: 1D imaging; Diffusion encoded tomography; Low-field NMR; Permanent magnets; Relaxation encoded tomography; Stray field; Tomography