Super-resolution Surface Microscopy of Conductors using Magnetic Resonance

Abstract The spatial resolution of traditional Magnetic Resonance Imaging (MRI) techniques is typically dictated by the strength of the applied magnetic field gradients, resulting in hard resolution limits of the order of 20–50 μm in favorable circumstances. We demonstrate here a technique which is...

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Autores principales:	Andrew J. Ilott, Alexej Jerschow
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f6871c9734334ee3b93abb62b277a7e1
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spelling	oai:doaj.org-article:f6871c9734334ee3b93abb62b277a7e12021-12-02T16:06:12ZSuper-resolution Surface Microscopy of Conductors using Magnetic Resonance10.1038/s41598-017-05429-32045-2322https://doaj.org/article/f6871c9734334ee3b93abb62b277a7e12017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05429-3https://doaj.org/toc/2045-2322Abstract The spatial resolution of traditional Magnetic Resonance Imaging (MRI) techniques is typically dictated by the strength of the applied magnetic field gradients, resulting in hard resolution limits of the order of 20–50 μm in favorable circumstances. We demonstrate here a technique which is suitable for the interrogation of regions at specified distances below the surface of conducting objects with a resolution well below these limiting values. This approach does not rely on magnetic field gradients, but rather on the spatial variation of the radiofrequency field within a conductor. Samples of aluminium and lithium metal with different sizes and morphologies are examined with this technique using 27Al and 7Li NMR. In this implementation, the slice selectivity depends on the conductivity of the material, as well as on the frequency of operation, although in the most general case, the technique could also be used to provide spatial selectivity with arbitrary B 1 field distributions in non-conductors.Andrew J. IlottAlexej JerschowNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Andrew J. Ilott Alexej Jerschow Super-resolution Surface Microscopy of Conductors using Magnetic Resonance
description	Abstract The spatial resolution of traditional Magnetic Resonance Imaging (MRI) techniques is typically dictated by the strength of the applied magnetic field gradients, resulting in hard resolution limits of the order of 20–50 μm in favorable circumstances. We demonstrate here a technique which is suitable for the interrogation of regions at specified distances below the surface of conducting objects with a resolution well below these limiting values. This approach does not rely on magnetic field gradients, but rather on the spatial variation of the radiofrequency field within a conductor. Samples of aluminium and lithium metal with different sizes and morphologies are examined with this technique using 27Al and 7Li NMR. In this implementation, the slice selectivity depends on the conductivity of the material, as well as on the frequency of operation, although in the most general case, the technique could also be used to provide spatial selectivity with arbitrary B 1 field distributions in non-conductors.
format	article
author	Andrew J. Ilott Alexej Jerschow
author_facet	Andrew J. Ilott Alexej Jerschow
author_sort	Andrew J. Ilott
title	Super-resolution Surface Microscopy of Conductors using Magnetic Resonance
title_short	Super-resolution Surface Microscopy of Conductors using Magnetic Resonance
title_full	Super-resolution Surface Microscopy of Conductors using Magnetic Resonance
title_fullStr	Super-resolution Surface Microscopy of Conductors using Magnetic Resonance
title_full_unstemmed	Super-resolution Surface Microscopy of Conductors using Magnetic Resonance
title_sort	super-resolution surface microscopy of conductors using magnetic resonance
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/f6871c9734334ee3b93abb62b277a7e1
work_keys_str_mv	AT andrewjilott superresolutionsurfacemicroscopyofconductorsusingmagneticresonance AT alexejjerschow superresolutionsurfacemicroscopyofconductorsusingmagneticresonance
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Super-resolution Surface Microscopy of Conductors using Magnetic Resonance

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