Sensitive J-coupling spectroscopy using high-Tc superconducting quantum interference devices in magnetic fields as low as microteslas

Shu-Hsien Liao, Hong-Chang Yang, Herng-Er Horng, Shieh-Yueh Yang, H. H. Chen, Dennis W. Hwang, Lian Pin Hwang

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

In this work we present a sensitive J-coupling spectroscopy in one shot using high-Tc superconducting quantum interference devices and a flux transformer in microtesla fields. In the proposed NMR detection scheme the precession of proton spin was inductively coupled to the SQUID magnetometer. We enhanced the SNR signal and the spectral resolution significantly by applying a pre-polarization field of 0.045T. In microtesla fields where chemical shifts are absent, we demonstrate proton-phosphate coupling J3[H,P] = (10.94 0.08)Hz in trimethyl phosphate. The sensitive NMR spectrometer will be of great interest for diagnosis information of molecular structure and biological applications.

Original languageEnglish
Article number045008
JournalSuperconductor Science and Technology
Volume22
Issue number4
DOIs
Publication statusPublished - 2009 Jul 24

Fingerprint

SQUIDs
Protons
phosphates
Phosphates
Nuclear magnetic resonance
Spectroscopy
Magnetic fields
interference
nuclear magnetic resonance
protons
Spectral resolution
Chemical shift
Magnetometers
precession
magnetic fields
transformers
spectral resolution
magnetometers
Molecular structure
spectroscopy

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

Sensitive J-coupling spectroscopy using high-Tc superconducting quantum interference devices in magnetic fields as low as microteslas. / Liao, Shu-Hsien; Yang, Hong-Chang; Horng, Herng-Er; Yang, Shieh-Yueh; Chen, H. H.; Hwang, Dennis W.; Hwang, Lian Pin.

In: Superconductor Science and Technology, Vol. 22, No. 4, 045008, 24.07.2009.

Research output: Contribution to journalArticle

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