High-Resolution NMR Spectroscopy with a Portable Single-Sided Sensor

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Science  27 May 2005:
Vol. 308, Issue 5726, pp. 1279
DOI: 10.1126/science.1108944

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We report construction of a portable nuclear magnetic resonance sensor with a single-sided open probe design. The resulting magnetic field inhomogeneity is compensated by a pulse sequence that takes advantage of parallel inhomogeneity in the applied radio frequency field. We can thereby acquire fluorine-19 spectra of liquid fluorocarbons with 8 parts per million resolution, surmounting the long-standing obstacle of obtaining chemical shift information with open probe instruments.

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