期刊
NATURE NANOTECHNOLOGY
卷 10, 期 2, 页码 129-134出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/nnano.2014.313
关键词
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资金
- National Science Foundation
- Defense Advanced Research Projects Agency QuASAR programme
- Swiss National Science Foundation
- National Defense Science and Engineering Graduate fellowship
- Direct For Mathematical & Physical Scien
- Division Of Physics [1125846, 0969816] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1408075] Funding Source: National Science Foundation
Nuclear magnetic resonance (NMR) spectroscopy and magnetic resonance imaging (MRI) provide non-invasive information about multiple nuclear species in bulk matter, with wide-ranging applications from basic physics and chemistry to biomedical imaging(1). However, the spatial resolution of conventional NMR and MRI is limited(2) to several micrometres even at large magnetic fields (>1T), which is inadequate for many frontier scientific applications such as single-molecule NMR spectroscopy and in vivo MRI of individual biological cells. A promising approach for nanoscale NMR and MRI exploits optical measurements of nitrogen-vacancy (NV) colour centres in diamond, which provide a combination of magnetic field sensitivity and nanoscale spatial resolution unmatched by any existing technology, while operating under ambient conditions in a robust, solid-state system(3-5). Recently, single, shallow NV centres were used to demonstrate NMR of nanoscale ensembles of proton spins, consisting of a statistical polarization equivalent to similar to 100-1,000 spins in uniform samples covering the surface of a bulk diamond chip6,7. Here, we realize nanoscale NMR spectroscopy and MRI of multiple nuclear species (H-1, F-19, P-31) in non-uniform (spatially structured) samples under ambient conditions and at moderate magnetic fields (similar to 20 mT) using two complementary sensor modalities.
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