Journal
SCIENCE
Volume 339, Issue 6119, Pages 557-560Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1231540
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Funding
- Defense Advanced Research Projects Agency QuASAR program
- Air Force Office of Scientific Research
- Center for Probing the Nanoscale at Stanford University (NSF) [PHY-0830228]
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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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