3rd Physics Institute and Research Center SCoPE, University of Stuttgart, 70569 Stuttgart, Germany.
Science. 2013 Feb 1;339(6119):561-3. doi: 10.1126/science.1231675.
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.
核磁共振（NMR）光谱在纳米级样品中的应用一直是一个难以实现的目标，只有在亚开尔文温度下进行大量的实验努力才能实现。我们在环境条件下证明了对各种流体和固体有机样品的（5 纳米）（3）体素的 NMR 信号的检测。我们使用原子大小的磁场传感器，即单个氮空位缺陷中心，将其嵌入大块金刚石表面下约 7 纳米处，以记录放置在金刚石表面上的各种样品的 NMR 光谱。其检测体积仅由 10（4）个核自旋组成，净磁化强度仅为 10（2）个统计极化自旋。
