Evidence map›Paper›PMID 38943993›Full record

ArticleJournal of magnetic resonance (San Diego, Calif. : 1997)2024

Design and optimization of THz coupling in zirconia MAS rotors for dynamic nuclear polarization NMR.

Guangjiang Li, Blake Dastrup, Ravi Shankar Palani, Michael A Shapiro, Sudheer K Jawla, Robert G Griffin, Keith A Nelson, Richard J Temkin

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of magnetic resonance (San Diego, Calif. : 1997), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Characterization of dielectric properties and their impact on MAS-DNP NMR applications.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2024
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Guangjiang LiPlasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. Electronic address: gli6@mit.edu.
Blake DastrupDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Ravi Shankar PalaniDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Francis Bitter Magnet Laboratory and Department of Chemistry, MIT, Cambridge, MA 02139, USA.
Michael A ShapiroPlasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Sudheer K JawlaPlasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Robert G GriffinDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Francis Bitter Magnet Laboratory and Department of Chemistry, MIT, Cambridge, MA 02139, USA.
Keith A NelsonDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Richard J TemkinPlasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

Funding

Tunable 330 GHz Gyrotron for DNP/NMRR01EB004866 · NIBIB · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI TEMKIN, RICHARD J · 2006 to 2024
$7.9M
High Power Millimeter Wave/Terahertz Sources for Magnetic ResonanceR01EB001965 · NIBIB · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI TEMKIN, RICHARD J · 2003 to 2021
$7.8M
High Field DNP and EPR in Biological SystemsR01GM132997 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI GRIFFIN, ROBERT GUY · 2019 to 2025
$4.6M
NIBIB NIH HHS R01 EB001965NIBIB NIH HHS R01 EB004866NIGMS NIH HHS R01 GM132997
6 · The paper itself

Abstract

We present 3D electromagnetic simulations of the coupling of a 250 GHz beam to the sample in a 380 MHz DNP NMR spectrometer. To obtain accurate results for magic angle spinning (MAS) geometries, we first measured the complex dielectric constants of zirconia, sapphire, and the sample matrix material (DNP juice) from room temperature down to cryogenic temperatures and from 220 to 325 GHz with a VNA and up to 1 THz with a THz TDS system. Simulations of the coupling to the sample were carried out with the ANSYS HFSS code as a function of the rotor wall material (zirconia or sapphire), the rotor wall thickness, and the THz beam focusing (lens or no lens). For a zirconia rotor, the B

Identifiers

PMID38943993
PMCPMC11482594

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.