The following lists only preprints without a corresponding final revised paper.
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06 Jul 2026
Line-Narrowing by Polychromatic Selective Spin-Locking in NMR
Coline Wiame, Hadi Loutfi, Kirill Sheberstov, and Geoffrey Bodenhausen
Magn. Reson. Discuss., https://doi.org/10.5194/mr-2026-9, 2026
Preprint under review for MR (discussion: open, 2 comments)
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Selective Spin-Locking (SSL) of the magnetization vectors of selected singlets or multiplets in high-resolution Nuclear Magnetic Resonance (NMR) spectra by mono- or polychromatic selective radio-frequency (RF) irradiation can reduce the linewidths to the limit given by homogeneous T1ρ relaxation in the rotating frame.
01 Jun 2026
Comparing Fourier Transform and Direct Wave Fitting in NMR FID Data Analysis
Jixin Chen
Magn. Reson. Discuss., https://doi.org/10.5194/mr-2026-8, 2026
Revised manuscript under review for MR (discussion: final response, 5 comments)
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This study compares different ways to simulate NMR raw data and analyze such data. The results show that direct signal fitting can recover useful information from very short or weak signals where traditional methods struggle, helping improve future artificial intelligence tools for chemical analysis.
31 Dec 2025
Pulsed Electron Paramagnetic Resonance on two Cu(II)-Cage Compounds With Six, Respectively Eight Copper Ions
Leonardo Passerini, Eduard Bobylev, Felix J. de Zwart, Henrik Hintz, Adelheid Godt, Bas de Bruin, Joost Reek, and Martina Huber
Magn. Reson. Discuss., https://doi.org/10.5194/mr-2025-17, 2025
Revised manuscript not accepted (discussion: closed, 4 comments)
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We describe electron paramagnetic resonance (EPR) based distance measurements between six, respectively eight copper(II)-ions that occupy octahedral or cubic positions in self-assembled nano-meter-sized spherical cages. These cages, which are reminiscent of soccer balls, are made up of inorganic ligands and Pd-ions. Their geometric shape is aesthetically pleasing, and to show that the double electron electron resonance technique works for more than two copper-ions is the novelty of this study.
30 Jul 2025
Spin prepolarization with a compact superconducting magnet
Paul Jelden, Magnus Dam, Jens Hänisch, Martin Börner, Sören Lehmkuhl, Bernhard Holtzapfel, Tabea Arndt, and Jan Gerrit Korvink
Magn. Reson. Discuss., https://doi.org/10.5194/mr-2025-10, 2025
Revised manuscript not accepted (discussion: closed, 5 comments)
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High critical field superconductors are less sensitive to magnet quenching, providing even higher fields. They can be cooled using cryogens like Helium, but simply using an oscillating pressure field. Using solar or wind energy, the cheap cooling promises magnetic resonance at high field, low operating cost, and renewable energy. Such magnets, made compact, can be used to prepolarise chemical samples, to be analysed in benchtop NMR systems, with better nuclear magnetic resonance spectra.
11 Jul 2024
Integration of electrically detected magnetic resonance on a chip (EDMRoC) with charge pumping for low-cost and sensitive defect characterization in SiC MOSFETs
Jan Lettens, Marina Avramenko, Ilias Vandevenne, Anh Chu, Philipp Hengel, Michal Kern, Jens Anders, Peter Moens, Etienne Goovaerts, and Sofie Cambré
Magn. Reson. Discuss., https://doi.org/10.5194/mr-2024-11, 2024
Revised manuscript not accepted (discussion: closed, 6 comments)
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Demonstration of an ultra-compact spectrometer for electrically-detected magnetic resonance on a chip (EDMRoC) of silicon carbide MOSFETs with comparable signal-to-noise ratio as state-of-the-art conventional resonator-based EDMR. The relatively low cost, high sensitivity and limited space requirements of the EDMRoC configuration holds promise for application in basic and applied research as well as in industrial environments.
13 Jan 2023
A perspective for magic angle spinning above 250 kHz – OptiMAS
Jan Korvink
Magn. Reson. Discuss., https://doi.org/10.5194/mr-2022-24, 2023
Publication in MR not foreseen (discussion: closed, 8 comments)
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The magic angle spinning (MAS) technique of solid state NMR requires samples to be rapidly rotated within a magnetic field. The rotation rate speed record is 150 kHz, or 9 million RPM, and hence MAS turbines hold the world rotation speed record for extended objects. The containers holding the samples are made of the strongest materials known, to be able to withstand the excessive centrifugal forces. To overcome the speed limit, this paper delineates a way to do so using an optical tweezers setup
09 Apr 2021
Insights into Protein Dynamics from 15N-1H HSQC
Erik R. P. Zuiderweg
Magn. Reson. Discuss., https://doi.org/10.5194/mr-2021-30, 2021
Publication in MR not foreseen (discussion: closed, 5 comments)
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Providing evidence that proteins are dynamical molecules is a major contribution of solution NMR to structural biology. But the classical experiments to measure dynamics can only be applied to small proteins. This is regretful, because larger proteins often display conformational changes in which dynamics plays a functional role. We show here that dynamic information can be extracted from HSQC NMR spectra using a computational approach. Such spectra are widely available also for larger proteins.
11 Jan 2021
Protein dynamics insights from 15N-1H (TROSY) HSQC
Erik R. P. Zuiderweg
Magn. Reson. Discuss., https://doi.org/10.5194/mr-2020-38, 2021
Preprint withdrawn (discussion: closed, 8 comments)
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We show here that information about protein molecular dynamics can be directly extracted out of a single NMR spectrum. Understanding protein dynamics is essential to understanding its function, energetics and biology. We hope that this contribution helps bring this insight to a much broader application field and audience community than previously possible.
01 Dec 2020
Open Access: Strengths, Weaknesses, Opportunities, and Threats. An Editorial
Geoffrey Bodenhausen
Magn. Reson. Discuss., https://doi.org/10.5194/mr-2020-28, 2020
Revised manuscript not accepted (discussion: closed, 6 comments)
20 Nov 2020
Heteronuclear and Homonuclear Finite Pulse Radio
Frequency Driven Recoupling
Evgeny Nimerovsky, Kai Xue, Kumar Tekwani Movellan, and Loren Andreas
Magn. Reson. Discuss., https://doi.org/10.5194/mr-2020-30, 2020
Revised manuscript not accepted (discussion: closed, 5 comments)
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The demonstration of the Finite Pulse Radio Frequency Driven Recoupling experiment was firstly published over the past 20 years. Since it has become one of the used experiments. In this article we consider that experiment using other theoretical and simulated approaches with respect to the previous works. These approaches help us to understand more clearly the influence of each part of that experiment and to see how exactly the spin system is evaluated during it.
07 Oct 2020
Anatomy of unfolding: The site-specific fold stability of Yfh1 measured by 2D NMR
Rita Puglisi, Annalisa Pastore, and Piero Andrea Temussi
Magn. Reson. Discuss., https://doi.org/10.5194/mr-2020-24, 2020
Publication in MR not foreseen (discussion: closed, 7 comments)
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We recently added 2D NMR spectroscopy to the well-established techniques able to obtain information on the process of unfolding using resonances of residues in the hydrophobic core of a protein. We asked whether a detailed analysis of the individual stability curves could provide additional site-specific information. By monitoring both cold and heat denaturation of individual residues we convincingly demonstrate that the two unfolding processes are intrinsically different.
21 Nov 2019
Spatio-temporal encoding by quadratic gradients in magnetic resonance imaging
Sina Marhabaie, Geoffrey Bodenhausen, and Philippe Pelupessy
Magn. Reson. Discuss., https://doi.org/10.5194/mr-2019-2, 2019
Preprint withdrawn (discussion: closed, 3 comments)
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Nowadays, almost all MRI technique used in clinical applications are based on a Fourier transformation of the raw data. Alternative non-Fourier magnetic resonance imaging techniques can offer some advantages under certain conditions. SPatio-temporal ENcoding (SPEN) is a non-Fourier method that usually employs frequency-swept radio frequency pulses and can give good images in inhomogeneous magnetic fields. In this work we show how one can improve this technique by using quadratic gradients.