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J Magn Reson. 2012 Dec;225:93-101. doi: 10.1016/j.jmr.2012.10.009. Epub 2012 Oct 26.

Solid-state STRAFI NMR probe for material imaging of quadrupolar nuclei.

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  • 1National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, USA.

Abstract

Stray field imaging (STRAFI) has provided an alternative imaging method to study solid materials that are typically difficult to obtain using conventional MRI methods. For small volume samples, image resolution is a challenge since extremely strong gradients are required to examine narrow slices. Here we present a STRAFI probe for imaging materials with quadrupolar nuclei. Experiments were performed on a 19.6 T magnet which has a fringe field gradient strength of 72 T/m, nearly 50 times stronger than commercial microimagers. We demonstrate the ability to acquire (7)Li 1D profiles of liquid and solid state lithium phantoms with clearly resolved features in the micrometer scale and as a practical example a Li ion battery electrode material is also examined.

Copyright © 2012 Elsevier Inc. All rights reserved.

PMID:
23151490
[PubMed]
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