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Measuring Interactions of Globular and Filamentous Proteins by Nuclear Magnetic Resonance Spectroscopy NMR and Microscale Thermophoresis MST
Published on: November 2, 2018
Simultaneous Detection of H and D NMR Signals in a Micro-Tesla Field
Giuseppe Bevilacqua1, Valerio Biancalana1, Yordanka Dancheva2
1Department of Information Engineering and Mathematics (DIISM), University of Siena , 53100 Siena, Italy.
Abstract:
We present NMR spectra of remote-magnetized deuterated water, detected in an unshielded environment by means of a differential atomic magnetometer. The measurements are performed in a μT field, while pulsed techniques are applied-following the sample displacement-in a 100 μT field, to tip both D and H nuclei by controllable amounts. The broad-band nature of the detection system enables simultaneous detection of the two signals and accurate evaluation of their decay times. The outcomes of the experiment demonstrate the potential of ultra-low-field NMR spectroscopy in important applications where the correlation between proton and deuteron spin-spin relaxation rates as a function of external parameters contains significant information.
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