Articles | Volume 4, issue 2
https://doi.org/10.5194/mr-4-231-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/mr-4-231-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
06 Sep 2023
Research article |
| 06 Sep 2023
| 06 Sep 2023
Cryogenic-compatible spherical rotors and stators for magic angle spinning dynamic nuclear polarization
Lauren E. Price
Department of Chemistry and Applied Biochemistry, ETH Zürich, Zurich 8093, Switzerland
Nicholas Alaniva
Department of Chemistry and Applied Biochemistry, ETH Zürich, Zurich 8093, Switzerland
Marthe Millen
Department of Chemistry and Applied Biochemistry, ETH Zürich, Zurich 8093, Switzerland
Till Epprecht
Department of Chemistry and Applied Biochemistry, ETH Zürich, Zurich 8093, Switzerland
Michael Urban
Department of Chemistry and Applied Biochemistry, ETH Zürich, Zurich 8093, Switzerland
Alexander Däpp
Department of Chemistry and Applied Biochemistry, ETH Zürich, Zurich 8093, Switzerland
Alexander B. Barnes
CORRESPONDING AUTHOR
Department of Chemistry and Applied Biochemistry, ETH Zürich, Zurich 8093, Switzerland
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We have recently demonstrated the capability to rapidly spin spherical rotors inclined precisely at the magic angle (54.74°) with respect to the external magnetic field used for nuclear magnetic resonance (NMR) experiments. We show that it is possible to spin a spherical rotor without using turbine grooves and that these rotors are extremely stable because of the inherent spherical-ring geometry. These results portend the facile implementation of spherical rotors for solid-state NMR experiments.
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This paper shows the design, simulations and experimental performance of a 35 GHz EPR resonator based on a cylindrical cavity with 3 mm sample access. The design is robust, simple to manufacture and maintain and with its elevated Q value well suited for sensitive EPR experiments using continuous wave or low-power pulsed excitation. Thus we make multi-frequency EPR spectroscopy, a powerful approach to deconvolute overlapping paramagnetic species, more accessible.
Thomas M. Osborn Popp, Alexander Däpp, Chukun Gao, Pin-Hui Chen, Lauren E. Price, Nicholas H. Alaniva, and Alexander B. Barnes
Magn. Reson., 1, 97–103, https://doi.org/10.5194/mr-1-97-2020, https://doi.org/10.5194/mr-1-97-2020, 2020
Short summary
Short summary
We have recently demonstrated the capability to rapidly spin spherical rotors inclined precisely at the magic angle (54.74°) with respect to the external magnetic field used for nuclear magnetic resonance (NMR) experiments. We show that it is possible to spin a spherical rotor without using turbine grooves and that these rotors are extremely stable because of the inherent spherical-ring geometry. These results portend the facile implementation of spherical rotors for solid-state NMR experiments.
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Short summary
This paper describes the design and implementation of new technology for nuclear magnetic resonance, which is a technique used to understand the molecular structure and dynamics of many systems. The spherical sample container and its apparatus introduced in this paper are used to perform initial proof-of-principle experiments at cryogenic temperatures. Further development of this technology will facilitate more flexibility in magnetic resonance experiments.
This paper describes the design and implementation of new technology for nuclear magnetic...
