Advertisement

Topics

Efficient 263 GHz magic angle spinning DNP at 100 K using solid-state diode sources.

08:00 EDT 28th March 2019 | BioPortfolio

Summary of "Efficient 263 GHz magic angle spinning DNP at 100 K using solid-state diode sources."

The development of new, high-frequency solid-state diode sources capable of operating at 263 GHz, together with an optimized stator design for improved millimeter-wave coupling to the NMR sample, have enabled low-power DNP experiments at 263 GHz/400 MHz. With 250 mW output power, signal enhancements as high as 120 are achieved on standard samples - approximately 1/3 of the maximal enhancement available with high-power gyrotrons under similar conditions. Diode-based sources have a number of advantages over vacuum tube devices: they emit a pure mode, can be rapidly frequency-swept over a wide range of frequencies, have reproducible output power over this range, and have excellent output stability. By virtue of their small size, low thermal footprint, and lack of facility requirements, solid-state diodes are also considerably cheaper to operate and maintain than high-power vacuum tube devices. In light of these features, and anticipating further improvements in terms of available output power, solid-state diodes are likely to find widespread use in DNP and contribute to further advances in the field.

Affiliation

Journal Details

This article was published in the following journal.

Name: Solid state nuclear magnetic resonance
ISSN: 1527-3326
Pages: 63-69

Links

DeepDyve research library

PubMed Articles [13551 Associated PubMed Articles listed on BioPortfolio]

Accurate Determination of 1H-15N Dipolar Couplings using inaccurate settings of the Magic Angle in Solid State NMR.

Magic Angle Spinning is an essential ingredient in a wide variety of solid-state NMR experiments. The standard procedures to adjust the rotor angle are not highly accurate resulting in a slight mis-ad...

Investigation of the effects of sintering and indium-doping of zinc oxide using Zn magic angle spinning NMR analysis.

Indium-doped zinc oxide, a potential alternative material to indium tin oxide, was analyzed in powder form via Zn magic angle spinning nuclear magnetic resonance (MAS NMR). The Zn MAS NMR results show...

Elucidating the internal structure and dynamics of α-chitin by 2DPASS-MAS-NMR and spin-lattice relaxation measurements.

The structure and dynamics of the second most abundant biopolymer α-chitin were studied by high resolution solid state C cross-polarization magic angle spinning nuclear magnetic resonance (CP-MAS-NMR...

Three-Dimensional NMR Spectroscopy of Fluorinated Pharmaceutical Solids under Ultrafast Magic Angle Spinning.

High-resolution solid-state analysis of multicomponent molecular systems, e.g., pharmaceutical formulations, is a great challenge. Solid-state NMR (ssNMR) plays a critical role in the characterization...

Evaluation of excitation schemes for indirect detection of N via solid-state HMQC NMR experiments.

It has previously been shown that N NMR spectra can be reliably obtained through indirect detection via HMQC experiments. This method exploits the transfer of coherence between single-(SQ) or double-q...

Clinical Trials [5640 Associated Clinical Trials listed on BioPortfolio]

Assistance in Neurosurgery (ExtempoRMN)

The main ambition of this project is to develop, and provide the medical community, an innovative method to analyze extemporaneously, during a neurosurgery operation, excised tissues. This...

External Micropulse Diode Laser Transscleral Trabeculoplasty (EMDLT) for Severe Open Angle Glaucoma

To prove that external contact micropulse diode laser trabeculoplasty (EMDLT) can significantly lower intraocular pressure in cases of advanced open angle glaucoma.

Laser Peripheral Iridotomy Plus Laser Peripheral Iridoplasty for Primary Angle Closure

This is a 10-centre randomized controlled clinical trial to explore whether laser peripheral iridoplasty (LPIP) plus laser peripheral iridotomy (LPI) is more effective than single LPI to c...

Magic Camp for Children With Hemiplegic Cerebral Palsy

The proposed study will test the feasibility and effectiveness of a "Magic Camp" in children with spastic hemiplegic cerebral palsy (CP). A single group pretest-posttest design (n=10) will...

Clinical Effectiveness of Diode Laser as an Adjunct in the Treatment of Periodontitis

a randomized controlled single-blinded study. the hypothesis of this clinical trial is that disjunctive use of diode laser improve the clinical parameters of periodontists , and there are ...

Medical and Biotech [MESH] Definitions

Lasers with a semiconductor diode as the active medium. Diode lasers transform electric energy to light using the same principle as a light-emitting diode (LED), but with internal reflection capability, thus forming a resonator where a stimulated light can reflect back and forth, allowing only a certain wavelength to be emitted. The emission of a given device is determined by the active compound used (e.g., gallium arsenide crystals doped with aluminum or indium). Typical wavelengths are 810, 1,060 and 1,300 nm. (From UMDNS, 2005)

Characteristics, properties, and effects of magnetic substances and magnetic fields.

The magnetic stimulation of specific target tissues or areas of the body for therapeutic purposes via the application of magnetic fields generated by magnets or electromagnets.

A state in which there is an enhanced potential for sensitivity and an efficient responsiveness to external stimuli.

The quality or state of being wettable or the degree to which something can be wet. This is also the ability of any solid surface to be wetted when in contact with a liquid whose surface tension is reduced so that the liquid spreads over the surface of the solid.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article