Using magnetic coupling to improve multiple resonance NMR probe circuits

Zens, A. P.

doi:10.1016/j.jmr.2020.106741

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…The sample was held at the bottom of the waveguide by a “J-arm” structure. We used a custom-designed inductively coupled double resonance NMR circuit ( 1 H– 13 C) in the probe to achieve high NMR/EPR performance at cryogenic temperatures, following a design principle developed by Tagami and Zens et al , …”

Section: Methodsmentioning

confidence: 99%

P1 Center Electron Spin Clusters Are Prevalent in Type Ib Diamonds

Bussandri,

Shimon,

Equbal

et al. 2023

J. Am. Chem. Soc.

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Understanding the spatial distribution of the P1 centers is crucial for diamond-based sensors and quantum devices. P1 centers serve as polarization sources for dynamic nuclear polarization (DNP) quantum sensing and play a significant role in the relaxation of nitrogen vacancy (NV) centers. Additionally, the distribution of NV centers correlates with the distribution of P1 centers, as NV centers are formed through the conversion of P1 centers. We utilized DNP and pulsed electron paramagnetic resonance (EPR) techniques that revealed strong clustering of a significant population of P1 centers that exhibit exchange coupling and produce asymmetric line shapes. The 13 C DNP frequency profile at a high magnetic field revealed a pattern that requires an asymmetric EPR line shape of the P1 clusters with electron−electron (e−e) coupling strengths exceeding the 13 C nuclear Larmor frequency. EPR and DNP characterization at high magnetic fields was necessary to resolve energy contributions from different e−e couplings. We employed a two-frequency pump−probe pulsed electron double resonance technique to show cross-talk between the isolated and clustered P1 centers. This finding implies that the clustered P1 centers affect all of the P1 populations. Direct observation of clustered P1 centers and their asymmetric line shape offers a novel and crucial insight into understanding magnetic noise sources for quantum information applications of diamonds and for designing diamond-based polarizing agents with optimized DNP efficiency for 13 C and other nuclear spins of analytes. We propose that room temperature 13 C DNP at a high field, achievable through straightforward modifications to existing solution-state NMR systems, is a potent tool for evaluating and controlling diamond defects.

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Section: Methodsmentioning

confidence: 99%

P1 Center Electron Spin Clusters Are Prevalent in Type Ib Diamonds

Bussandri,

Shimon,

Equbal

et al. 2023

J. Am. Chem. Soc.

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“…The magnetic resonance coupling (MRC) method has been shown to resolve the issue of a drop in efficiency when the transfer distance is increased 6 . MRC has been shown to maintain transfer efficiency with gradual increases in transfer distance.…”

Section: Introductionmentioning

confidence: 99%

“…The magnetic resonance method gained a lot of interest in 2007 after a team from MIT's Department of Physics, Department of Electrical Engineering and Computer Science, and ISN were able to demonstrate the transfer of 60 W of power over more than 2 m. 5 The magnetic resonance coupling (MRC) method has been shown to resolve the issue of a drop in efficiency when the transfer distance is increased. 6 MRC has been shown to maintain transfer efficiency with gradual increases in transfer distance. The MRC method can be employed in the WPT system using four topologies: Series Series (S-S), Series Parallel (S-P), Parallel Series (P-S), and Parallel Parallel (P-P).…”

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confidence: 99%

A comprehensive review of wireless power transfer systems: Focused study with fractional‐order elements

Ali,

Mehta

2024

Circuit Theory & Apps

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Wireless power transfer (WPT) refers to promising technology that allows energy transfer between devices without wires or cables. Although wireless power transfer systems have come a long way, they still have a long way to go before they become truly viable. An approach that has been offered to address these issues is the implementation of fractional‐order elements in WPT systems. Fractional‐order wireless power transfer systems have emerged as a promising solution to address some challenges in classical approaches. This review aims to provide a valuable resource for researchers and engineers interested in designing and optimizing WPT systems using fractional methods by summarizing the current knowledge on fractional‐based approaches in WPT. Furthermore, this article sheds light on the benefits, challenges, and prospects of integrating fractional elements into WPT strategies.

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Combined multi‐band decoupling in biomolecular NMR spectroscopy

Anklin

Byrd

2021

J Biomol NMR

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Using magnetic coupling to improve multiple resonance NMR probe circuits

Cited by 5 publications

References 15 publications

P1 Center Electron Spin Clusters Are Prevalent in Type Ib Diamonds

P1 Center Electron Spin Clusters Are Prevalent in Type Ib Diamonds

A comprehensive review of wireless power transfer systems: Focused study with fractional‐order elements

Combined multi‐band decoupling in biomolecular NMR spectroscopy

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