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; S. Y. Yang; H. H. Chen; Dennis W. Hwang; Lian Pin Hwang

doi:10.1088/0953-2048/22/4/045008

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

Shu Hsien Liao, Hong Chang Yang^*, Herng Er Horng, S. Y. Yang, H. H. Chen, Dennis W. Hwang, Lian Pin Hwang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

In this work we present a sensitive J-coupling spectroscopy in one shot using high-T_c 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 language	English
Article number	045008
Journal	Superconductor Science and Technology
Volume	22
Issue number	4
DOIs	https://doi.org/10.1088/0953-2048/22/4/045008
Publication status	Published - 2009

ASJC Scopus subject areas

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

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10.1088/0953-2048/22/4/045008

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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.",

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AU - Liao, Shu Hsien

AU - Yang, Hong Chang

AU - Horng, Herng Er

AU - Yang, S. Y.

AU - Chen, H. H.

AU - Hwang, Dennis W.

AU - Hwang, Lian Pin

PY - 2009

Y1 - 2009

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AB - 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.

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

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