Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Vijaykumar Ramaswamy"'
Autor:
William W. Brey, Arthur S. Edison, Jeremy N. Thomas, Vijaykumar Ramaswamy, Taylor L. Johnston, Ilya M. Litvak
Publikováno v:
IEEE Trans Appl Supercond
Nuclear magnetic resonance (NMR) probes using thin-film high temperature superconducting (HTS) resonators offer high sensitivity and are particularly suitable for small-sample applications. We are developing an improved 1.5 mm HTS NMR probe designed
Autor:
Taylor L. Johnston, Arthur S. Edison, Vijaykumar Ramaswamy, Nicolas Freytag, Matthew E. Merritt, Jeremy N. Thomas, Jerris W. Hooker, Ilya M. Litvak, William W. Brey
Publikováno v:
IEEE Trans Appl Supercond
Significant sensitivity improvements have been achieved by utilizing high temperature superconducting (HTS) resonators in nuclear magnetic resonance (NMR) probes. Many nuclei such as (13)C benefit from strong excitation fields which cannot be produce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89af8d1fadb129772c8a074550a1a024
https://europepmc.org/articles/PMC9017787/
https://europepmc.org/articles/PMC9017787/
Autor:
Vijaykumar Ramaswamy, Nicolas Freytag, Arthur S. Edison, William W. Brey, Ilya M. Litvak, Omid Sanati, Lawrence A. Hornak
Publikováno v:
IEEE Trans Appl Supercond
We present the design of a novel high-temperature superconductor double-sided racetrack resonator for a (13)C optimized nuclear magnetic resonance (NMR) transmitter/receiver coil. The coils operate in a 21.1 T magnet and accommodate a 3 mm × 6.2 mm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68c9586d37ee37c4041dea3d428ac255
https://europepmc.org/articles/PMC8959468/
https://europepmc.org/articles/PMC8959468/
Autor:
Arthur S. Edison, Nicolas Freytag, Vijaykumar Ramaswamy, William W. Brey, Ghoncheh Amouzandeh, Lawrence A. Hornak
Publikováno v:
IEEE Trans Appl Supercond
Replacing normal metal NMR coils with thin-film high-temperature superconductor (HTS) resonators can significantly improve the sensitivity of analytical NMR. To study the use of these resonators for excitation as well as detection, we investigated th
Publikováno v:
IEEE Transactions on Applied Superconductivity. 27:1-5
Nuclear Magnetic Resonance (NMR) probes based on High Temperature Superconducting (HTS) resonators have demonstrated significant gains in detection sensitivity. However, the widespread acceptance of this technology has been limited by some unresolved
Autor:
Richard S. Withers, Jerris W. Hooker, Robert E. Nast, Arthur S. Edison, Vijaykumar Ramaswamy, William W. Brey
Publikováno v:
Journal of Magnetic Resonance. 235:58-65
We report a 1.5-mm NMR probe based on high temperature superconductors operating at 14.1 T optimized for 13C detection. The probe has a total sample volume of about 35 microliters (μL) with an active volume of 20 μL and provides exceptional mass se
Autor:
Robert E. Nast, Rajendra K. Arora, Vijaykumar Ramaswamy, Arthur S. Edison, Richard S. Withers, William W. Brey, Jerris W. Hooker
This paper presents an empirical formula to accurately determine the frequencies of the fundamental and higher order resonances of an Archimedean spiral in a uniform dielectric medium in the absence of a ground plane. The formula is based on method-o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0bcc2831f4f596272f67a0a203cedd4
https://europepmc.org/articles/PMC4635680/
https://europepmc.org/articles/PMC4635680/
Autor:
Vijaykumar, Ramaswamy, Jerris W, Hooker, Richard S, Withers, Robert E, Nast, William W, Brey, Arthur S, Edison
Publikováno v:
Journal of magnetic resonance (San Diego, Calif. : 1997). 235
We report a 1.5-mm NMR probe based on high temperature superconductors operating at 14.1T optimized for (13)C detection. The probe has a total sample volume of about 35 microliters (μL) with an active volume of 20 μL and provides exceptional mass s
Autor:
Arthur S. Edison, Jerris W. Hooker, Vijaykumar Ramaswamy, William W. Brey, Robert E. Nast, Richard S. Withers
Publikováno v:
IEEE Transactions on Applied Superconductivity. :1-1
Nuclear magnetic resonance (NMR) spectroscopy is a very powerful technique to study molecular structure and dynamics because of the rich chemical information it can extract. However, low inherent sensitivity is the Achilles' heel of NMR. The use of h
Autor:
Arthur S. Edison, Vijaykumar Ramaswamy, William W. Brey, Richard S. Withers, Jerris W. Hooker, Robert E. Nast
Publikováno v:
eMagRes
This review provides a summary of cryogenic NMR probes, with a special emphasis on small volume, high-temperature superconducting (HTS) probes. We provide a short historical overview of the development of cryogenic systems and HTS probes and show why
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32a32aaf2ece58b4b57d8429a2d22092
https://doi.org/10.1002/9780470034590.emrstm1315
https://doi.org/10.1002/9780470034590.emrstm1315