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NMR Spectrometers: Overview

NMR Spectrometers: Overview

NMR spectrometers consist of a strong magnet, a radiofrequency transmitter, and a detector attached to a computer console for recording spectra of samples containing NMR-active nuclei. In first-generation NMR instruments called continuous-wave spectrometers, the resonance frequencies of the nuclei are determined by frequency-sweep or field-sweep methods. The magnetic field strength is fixed and the rf signal is swept in the former, while the radiofrequency signal is fixed and the magnetic field...

Applications Of NMR In Biology

Applications Of NMR In Biology

Nuclear magnetic resonance (NMR) spectroscopy is a very valuable analytical technique for researchers. It has been used for more than 50 years as an analytical tool. F. Bloch and E. Purcell formulated NMR in 1946 and won the 1952 Nobel Prize in Physics for their work. Biological macromolecules such as proteins, nucleic acids, lipids, and organic molecules including pharmaceutical compounds, can be studied using this versatile tool that exploits the magnetic properties of certain nuclei.

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.

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Related Experiment Video

Updated: Mar 17, 2026

NMR Spectroscopy as a Robust Tool for the Rapid Evaluation of the Lipid Profile of Fish Oil Supplements

Published on: May 1, 2017

NMRFx Processor: a cross-platform NMR data processing program.

Michael Norris¹, Bayard Fetler¹, Jan Marchant^2,3

¹One Moon Scientific, Inc., 839 Grant Ave., Westfield, NJ, 07090, USA.

Journal of Biomolecular NMR

|July 27, 2016

Summary

This summary is machine-generated.

NMRFx Processor is a new, cross-platform software for nuclear magnetic resonance (NMR) data processing. It offers parallel processing of NMR data and supports advanced techniques like iterative soft thresholding for non-uniformly sampled datasets.

Keywords:

Data processing NMR Non-uniform sampling Signal processing

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Last Updated: Mar 17, 2026

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Published on: November 2, 2018

Area of Science:

Chemistry
Biochemistry
Computational Science

Background:

Nuclear Magnetic Resonance (NMR) spectroscopy is a powerful technique for molecular structure determination.
Efficient processing of NMR data is crucial for extracting meaningful information.
Existing NMR data processing tools may lack cross-platform compatibility or advanced features.

Purpose of the Study:

To introduce NMRFx Processor, a novel, cross-platform software for NMR data processing.
To provide a versatile tool that supports both graphical user interface (GUI) and command-line operations.
To enable advanced NMR data analysis, including processing of non-uniformly sampled datasets.

Main Methods:

NMRFx Processor is developed using the Java programming language for cross-platform compatibility (Linux, Mac OS X, Windows).
Processing scripts are written in Python, leveraging Java for low-level commands executed in parallel on multi-core processors.
The software offers automated script generation from experimental parameters and interactive GUI-based script construction.

Main Results:

The program facilitates parallel processing of NMR data, enhancing computational efficiency.
It incorporates advanced processing operations, including iterative soft thresholding for non-uniformly sampled data.
The interactive GUI serves as an educational tool for learning NMR data analysis techniques.

Conclusions:

NMRFx Processor offers a flexible and efficient solution for NMR data processing.
Its cross-platform nature and advanced features make it suitable for a wide range of NMR applications.
The software can be utilized for both research and educational purposes in NMR spectroscopy.