PCB Design

Compact-NMR (cNMR)

A compact Time-Domain Nuclear Magnetic Resonance (TD-NMR) system. The system is made up of custom NMR electronics with a compact and rugged permanent magnet array designed to enable future deployment as an in situ sensor. A signal-to-noise ratio of 25 dB has been demonstrated for a single scan, and sufficient data can be acquired in one minute for Time-Domain measurements. A high-level overview of the system is presented in Figures 1-5. For more details related to its potential use, refer to references [1] and [2].

Figure 1: Full setup for the TD-NMR system, with key components and subsystems annotated.

Figure 2: Data Obtained From the Nmr System Showing: (Left) Toluene Spin Echos Resulting From the Application of One 90◦ Pulse and Two 180◦ Pulses, and; (Right) T2 Relaxation Curves for Toluene, Heptane, and Hexadecane Following 32 Averages of 3965 Spin Echo Pulses.

Figure 3: Full Schematic of the Control System, Permanent Magnet, and Signal Routing and Amplification Electronics for the Compact Td-nmr System.

Figure 4: The magnet array, showing: (a) fully assembled magnet; (b) orientation of individual magnets and steel pieces, and; (c) two-dimensional finite element simulation.

Figure 5: NMR probe with key components annotated.

References

[1] Jacob S. Martin, Austin R.J. Downey, Mohammed Baalousha, and Sang Hee Won. Rapid measurement of magnetic particle concentrations in wildland-urban interface fire ashes and runoff using compact NMR. IEEE Sensors Journal, pages 1-1, 2023. doi:10.1109/jsen.2023.3272882

[2] Jacob Martin, Austin R.J. Downey, and Sang Hee Won. Compact time domain NMR design for the determination of hydrogen content in gas turbine fuels. In Volume 1: 24th International Conference on Advanced Vehicle Technologies (AVT). American Society of Mechanical Engineers, aug 2022. doi:10.1115/detc2022-90023

System Development

This directory contains the system design files for multiple versions of the compact NMR.

Literature

This directory contains links to important source information for the compact NMR system.

Licensing and Citation

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License [cc-by-sa 4.0].

Cite this data as:

Bibtex

@Misc{ARTSLabCompactNmr,
author = {ARTS-Lab},
howpublished = {GitHub},
title = {Compact-{NMR}},
groups = {ARTS-Lab},
url = {https://github.com/ARTS-Laboratory/Compact-NMR},
note = {Accessed: Month dd, yyyy},
}

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