Nanoscale Nuclear Magnetic Resonance with a Nitrogen-Vacancy Spin Sensor

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Science  01 Feb 2013:
Vol. 339, Issue 6119, pp. 557-560
DOI: 10.1126/science.1231540

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Extension of nuclear magnetic resonance (NMR) to nanoscale samples has been a longstanding challenge because of the insensitivity of conventional detection methods. We demonstrated the use of an individual, near-surface nitrogen-vacancy (NV) center in diamond as a sensor to detect proton NMR in an organic sample located external to the diamond. Using a combination of electron spin echoes and proton spin manipulation, we showed that the NV center senses the nanotesla field fluctuations from the protons, enabling both time-domain and spectroscopic NMR measurements on the nanometer scale.

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