Spin Diffusion and Nuclear Magnetic Resonance in Rotating Solids

1962 ◽  
Vol 80 (6) ◽  
pp. 1382-1383 ◽  
Author(s):  
S Clough ◽  
K W Gray
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Spin Diffusion ◽  
Nuclear Magnetic

Quenching spin diffusion in selective measurements of transient overhauser effects in nuclear magnetic resonance. Applications to oligonucleotides

1994 ◽  
Vol 116 (1) ◽  
pp. 362-368 ◽  
Author(s):  
Catherine Zwahlen ◽  
Sebastien J. F. Vincent ◽  
Lorenzo Di Bari ◽  
Malcolm H. Levitt ◽  
Geoffrey Bodenhausen
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Spin Diffusion ◽  
Nuclear Magnetic

On the Structure of Thin diamond Films: A 1H and 13C Nuclear Magnetic Resonance Study

1994 ◽  
Vol 339 ◽  
Author(s):  
J. Shinar ◽  
M. Pruski ◽  
D. P. Lang ◽  
S.-J. Hwang ◽  
H. Jia
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Spin Diffusion ◽  
Natural Diamond ◽  
Relaxation Times ◽  
Diamond Films ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
13C Nuclear Magnetic Resonance ◽  
Nuclear Magnetic

ABSTRACTThe 1H and 13C nuclear magnetic resonance (NMR) of thin diamond films deposited from naturally abundant (1.1 at.%) as well as 50% and 100% 13C-enriched CH4 heavily diluted in H2is described and discussed. Less than 0.6 at.% of hydrogen is found in the films which contain crystallites up to ∼15 μm across. The 1H NMR consists of a broad 50–65 kHz wide Gaussian line attributed to H atoms bonded to carbon and covering the crystallite surfaces. A narrow Lorentzian line was only occasionally observed and found not to be intrinsic to the diamonds. The 13C NMR demonstrates that >99.5% of the C atoms reside in a quaternary diamond-like configuration. The 13C spin-lattice relaxation times T1 are four orders of magnitude shorter than in natural diamond and believed to be due to 13C spin diffusion to paramagnetic centers, presumably carbon dangling bonds. Analysis of T1 indicates that within the 13C spin diffusion length of ∼0.05 μm these centers are uniformly distributed in the diamond crystallites, possibly concentrated on the internal surfaces of a relatively dense system of nanovoids.

Nanoscale nuclear magnetic resonance with chemical resolution

Science ◽  
2017 ◽  
Vol 357 (6346) ◽  
pp. 67-71 ◽  
Author(s):  
Nabeel Aslam ◽  
Matthias Pfender ◽  
Philipp Neumann ◽  
Rolf Reuter ◽  
Andrea Zappe ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Spin Diffusion ◽  
Molecular Diffusion ◽  
Pulse Sequences ◽  
Nitrogen Vacancy ◽  
Analytical Technique ◽  
Homonuclear Decoupling ◽  
Nuclear Magnetic

Nuclear magnetic resonance (NMR) spectroscopy is a key analytical technique in chemistry, biology, and medicine. However, conventional NMR spectroscopy requires an at least nanoliter-sized sample volume to achieve sufficient signal. We combined the use of a quantum memory and high magnetic fields with a dedicated quantum sensor based on nitrogen vacancy centers in diamond to achieve chemical shift resolution in 1H and 19F NMR spectroscopy of 20-zeptoliter sample volumes. We demonstrate the application of NMR pulse sequences to achieve homonuclear decoupling and spin diffusion measurements. The best measured NMR linewidth of a liquid sample was ~1 part per million, mainly limited by molecular diffusion. To mitigate the influence of diffusion, we performed high-resolution solid-state NMR by applying homonuclear decoupling and achieved a 20-fold narrowing of the NMR linewidth.

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