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

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

27 引文 斯高帕斯(Scopus)

摘要

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.

原文英語
文章編號045008
期刊Superconductor Science and Technology
22
發行號4
DOIs
出版狀態已發佈 - 2009

ASJC Scopus subject areas

  • 陶瓷和複合材料
  • 凝聚態物理學
  • 金屬和合金
  • 電氣與電子工程
  • 材料化學

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