Some Applications of a Field Programmable Gate Array Based Time-Domain Spectrometer for NMR Relaxation and NMR Cryoporometry

Webber, J. Beau W.

doi:10.3390/app10082714

Cited by 5 publications

(4 citation statements)

References 45 publications

(48 reference statements)

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“…In [7], a mini-review summarizes the progress that has been achieved in the coupling between TD-NMR (using low-field spectrometers) and electrochemistry and how the challenges that this coupling poses have been overcome over the years. In [8], advances in the development of a Field Programmable Gate Array (FPGA) based spectrometers for NMR relaxation is described along with applications in NMR cryoporometry. Performing the NMR measurement in the strong heteronuclear J-coupling regime is described in [9] and shows promise for the chemical analysis of small molecules.…”

Section: Applications Of Low Field Magnetic Resonancementioning

confidence: 99%

Editorial on Special Issue “Applications of Low Field Magnetic Resonance”

Morris

Newton

2021

Applied Sciences

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Section: Applications Of Low Field Magnetic Resonancementioning

confidence: 99%

Editorial on Special Issue “Applications of Low Field Magnetic Resonance”

Morris

Newton

2021

Applied Sciences

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“…2. The examples have mainly been prepared using a particularly compact example, the lab-tools Mk3 timedomain NMR spectrometer [22,24], see Fig. 1 and Sect.…”

Section: Nmr On the Benchtop And In The Fieldmentioning

confidence: 99%

“…Our preferred technique now is to use Peltier thermoelectric cooling (− 35C to + 80C), aided to -80C with millisecond bursts of CO 2 gas. The Pelter cooling gives superb long-term precision control of temperature, which is essential for NMR Cryoporometric pore-size-distribution measurements from sub-1nm to over 1 m (needing 10mk precision near the probe liquid bulk melting point) [22].…”

Section: Lab-tools T-d Nmr Spectrometer With Peltier Cooled Variable-temperature Nmr Probementioning

confidence: 99%

A review of the use of simple time-domain NMR/MRI for material-science

Webber¹

2021

SN Appl. Sci.

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The intention of this discussion is as a simple introduction for general—non-nuclear magnetic resonance (NMR)-specialist—materials scientists, to make them aware as to how some of the materials science measurements that they need to make might possibly be addressed by simple physical measurements using low-cost time-domain NMR apparatus. The intention is to include a minimum of complex NMR detail, while enabling general material-scientists to see that simple easily understood time-domain NMR might be of use to them. That is how I have tried to structure this discussion. It seems to me be generally forgotten how much of materials science is actually physics, as opposed to chemistry, and the extent to which simple time-domain NMR may be used to make measurements of the physical properties of materials. There frequently seems to be an assumption that if NMR is mentioned that it is chemical analysis methods that are under discussion, or possibly magnetic resonance imaging (MRI). These are both extremely powerful techniques, but to forget about the physics that often governs the properties of the sample can be a significant mistake. Key material science properties are often described in different fields using the terms mobility/dynamics/stiffness/viscosity/rigidity of the sample. These properties are usually dependent on atomic and molecular motion in the sample. We will discuss a method, time-domain NMR, that appears often to be ignored, to obtain quantitative or comparative information on these properties. The intention of this paper is not to probe the material properties of some interesting system, but to discuss in as clear a manner as possible a particular technique, “low-field time-domain NMR”, to bring this technique and its advantages to the attention of other material scientists. Thus we discuss time-domain NMR and MRI, as methods of measuring the physical properties of liquid and solid materials. Time-domain NMR is also a good technique for measuring pore-size distributions from the nano-meter to microns, using a technique known as NMR cryoporometry (NMRC). Standard MRI protocols may be combined with NMRC, so that spatial resolution of pore dimensions may also be obtained. Low-field time-domain NMR is, at its fundamentals, a very approachable and easily comparative technique, where the material properties may often be extracted from the time-domain data much more simply than from say high-field high-resolution spectral data. In addition, low-field time-domain NMR apparatus is typically a factor of 10 to 100 times cheaper than high-field high-resolution solid-state NMR systems.

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“…However, high costs of the high-field NMR equipment limited the applications of NMR cryoporometry to specialized NMR labs only. Nowadays, progress done in the developments of the table-top NMR devices operating with permanent magnets makes their costs comparable to the gas sorption devices [67]. As a second aspect, broad application of thermoporometry, irrespective of the technique used, is prohibited by poor understanding of solid-liquid equilibria under confinement.…”

Section: Introductionmentioning

confidence: 99%

Advanced NMR Cryoporometry

Enninful

Enke

Valiullin

2023

Chemie Ingenieur Technik

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Accurate structural characterization of mesoporous solids is of importance for potential applications and for better understanding of properties of natural porous materials. Among different characterization techniques, thermoporometry has several beneficial features, such as applicability to wetted and soft materials. In this review, we discuss recent advancements concerning nuclear magnetic resonance cryoporometry allowing for a notable improvement of the accuracy of this method.

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Some Applications of a Field Programmable Gate Array Based Time-Domain Spectrometer for NMR Relaxation and NMR Cryoporometry

Cited by 5 publications

References 45 publications

Editorial on Special Issue “Applications of Low Field Magnetic Resonance”

Editorial on Special Issue “Applications of Low Field Magnetic Resonance”

A review of the use of simple time-domain NMR/MRI for material-science

Advanced NMR Cryoporometry

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