Partial homogeneity based high-resolution nuclear magnetic resonance spectra under inhomogeneous magnetic fields

Journal Article · Mon Sep 29 04:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4896997· OSTI ID:22350805

Wei, Zhiliang; Lin, Liangjie; Lin, Yanqin; Chen, Zhong ^[1]; Chen, Youhe ^[2]

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1. Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005 (China)
2. Department of Electronic Engineering, Xiamen University, Xiamen 361005 (China)

In nuclear magnetic resonance (NMR) technique, it is of great necessity and importance to obtain high-resolution spectra, especially under inhomogeneous magnetic fields. In this study, a method based on partial homogeneity is proposed for retrieving high-resolution one-dimensional NMR spectra under inhomogeneous fields. Signals from series of small voxels, which characterize high resolution due to small sizes, are recorded simultaneously. Then, an inhomogeneity correction algorithm is developed based on pattern recognition to correct the influence brought by field inhomogeneity automatically, thus yielding high-resolution information. Experiments on chemical solutions and fish spawn were carried out to demonstrate the performance of the proposed method. The proposed method serves as a single radiofrequency pulse high-resolution NMR spectroscopy under inhomogeneous fields and may provide an alternative of obtaining high-resolution spectra of in vivo living systems or chemical-reaction systems, where performances of conventional techniques are usually degenerated by field inhomogeneity.

• OSTI ID: 22350805
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 13 Vol. 105; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALGORITHMS
CORRECTIONS
INHOMOGENEOUS FIELDS
MAGNETIC FIELDS
NMR SPECTRA
NUCLEAR MAGNETIC RESONANCE
ONE-DIMENSIONAL CALCULATIONS
PATTERN RECOGNITION
PULSES
RADIOWAVE RADIATION
RESOLUTION
SPECTROSCOPY