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Science. 2013 Feb 1;339(6119):561-3. doi: 10.1126/science.1231675.

Nuclear magnetic resonance spectroscopy on a (5-nanometer)3 sample volume.

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1
3rd Physics Institute and Research Center SCoPE, University of Stuttgart, 70569 Stuttgart, Germany.

Abstract

Application of nuclear magnetic resonance (NMR) spectroscopy to nanoscale samples has remained an elusive goal, achieved only with great experimental effort at subkelvin temperatures. We demonstrated detection of NMR signals from a (5-nanometer)(3) voxel of various fluid and solid organic samples under ambient conditions. We used an atomic-size magnetic field sensor, a single nitrogen-vacancy defect center, embedded ~7 nanometers under the surface of a bulk diamond to record NMR spectra of various samples placed on the diamond surface. Its detection volume consisted of only 10(4) nuclear spins with a net magnetization of only 10(2) statistically polarized spins.

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PMID:
23372009
DOI:
10.1126/science.1231675
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