Journal ArticleDOI
Cultural Heritage Studies with Mobile NMR.
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TLDR
This work presents recent progress in the analysis of cultural heritage with mobile 1 H NMR stray-field sensors, for which the detection zone is outside of the NMR magnet.Abstract:
Nuclear magnetic resonance (NMR) provides in situ information about selected isotope densities in samples and objects, while also providing contrast through rotational and translational molecular dynamics. These parameters are probed not only in NMR spectroscopy and imaging but also in nondestructive materials testing by mobile stray-field NMR, the unique properties of which are valuable in cultural heritage studies. We present recent progress in the analysis of cultural heritage with mobile 1 H NMR stray-field sensors, for which the detection zone is outside of the NMR magnet. Prominent applications include the analysis of stratigraphies in paintings and frescoes, and the assessment of material states changing under the impact of aging, conservation, and restoration.read more
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Journal ArticleDOI
Low-field and benchtop NMR
TL;DR: Miniaturization and cost-reduction of NMR instruments outline current development goals along with the development of smart-phone-like apps to conduct standard NMR analyses.
Journal ArticleDOI
Magnetic resonance measurements of cellular and sub-cellular membrane structures in live and fixed neural tissue.
Nathan H. Williamson,Rea Ravin,Dan Benjamini,Hellmut Merkle,Melanie Falgairolle,Michael J. O'Donovan,Dvir Blivis,Dave Ide,Teddy X. Cai,Nima S. Ghorashi,Ruiliang Bai,Ruiliang Bai,Peter J. Basser +12 more
TL;DR: Tissue delipidation methods are used to show that water diffusion is restricted solely by lipid membranes, and magnetic resonance methods are developed for real-time measurement of tissue microstructure and membrane permeability of live and fixed excised neonatal mouse spinal cords.
Journal ArticleDOI
Non-invasive mobile technology to study the stratigraphy of ancient Cremonese violins: OCT, NMR-MOUSE, XRF and reflection FT-IR spectroscopy
Claudia Invernizzi,Claudia Invernizzi,Giacomo Fiocco,Giacomo Fiocco,Magdalena Iwanicka,Magdalena Kowalska,Piotr Targowski,Bernhard Blümich,Christian Rehorn,Valeria Gabrielli,Danilo Bersani,Maurizio Licchelli,Marco Malagodi +12 more
TL;DR: In this paper, the authors used optical coherence tomography (OCT), reflection FT-IR spectroscopy, X-Ray Fluorescence (XRF), and Nuclear Magnetic Resonance (NMR-MOUSE) to analyze Cremonese violins from innermost wood treatments to the outermost varnish layers.
Journal ArticleDOI
Cleaning oil paintings: NMR relaxometry and SPME to evaluate the effects of green solvents and innovative green gels
Silvia Prati,Giorgia Sciutto,Francesca Volpi,Christian Rehorn,Roberta Vurro,Roberta Vurro,Bernhard Blümich,Laura Mazzocchetti,Loris Giorgini,Chiara Samorì,Paola Galletti,Emilio Tagliavini,Rocco Mazzeo +12 more
TL;DR: In this paper, an analytical protocol based on the combination of solid phase microextraction (SPME) and nuclear magnetic resonance (NMR) relaxometry was proposed to evaluate solvent entry and retention in the paint layer, as well as the induced microscopic and macroscopic changes to the elasticity of the binder.
Journal ArticleDOI
MR to go
Jens Anders,Klaus Lips +1 more
TL;DR: This paper focuses the discussion on the application of integrated circuit technology for the miniaturization of the NMR and EPR spectrometer hardware and/or the detector and will briefly touch on magnet technology.
References
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Journal ArticleDOI
Effects of Diffusion on Free Precession in Nuclear Magnetic Resonance Experiments
H. Y. Carr,Edward M. Purcell +1 more
TL;DR: In this paper, the effect of diffusion on free precession in nuclear resonance has been studied, and a new scheme for measuring the transverse relaxation time is described, which largely circumvents the diffusion effect.
Journal ArticleDOI
Modified Spin‐Echo Method for Measuring Nuclear Relaxation Times
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TL;DR: In this article, a spin echo method adapted to the measurement of long nuclear relaxation times (T2) in liquids is described, and the pulse sequence is identical to the one proposed by Carr and Purcell, but the rf of the successive pulses is coherent, and a phase shift of 90° is introduced in the first pulse.
Journal ArticleDOI
Principles of dynamic nuclear polarisation
Anatole Abragam,M Goldman +1 more
TL;DR: In this paper, a survey of the theories of spin temperature and nuclear relaxation in solids is presented, followed by a short section on the so-called well-resolved solid effect, and a much more detailed one on DNP by thermal mixing in the non-linear low spin-temperature domain.
Journal ArticleDOI
The NMR MOUSE, a Mobile Universal Surface Explorer
TL;DR: In this article, a PC-based NMR probe is used to investigate the non-destructive investigation of arbitrarily large objects in the presence of magnetic field and conducting magnetism.