Nuclear Magnetic Resonance Spectroscopy on a (5-Nanometer)3 Sample Volume
Nuclear Magnetic Resonance Spectroscopy on a (5-Nanometer)3 Sample Volume
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DOI：
10.1126/science.1231675
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发表时间：
2013-02-01
期刊：
影响因子：
56.9
通讯作者：
Wrachtrup, J.
中科院分区：
文献类型：
--
作者：
Staudacher, T.;Shi, F.;Wrachtrup, J.
核磁共振（NMR）光谱应用于纳米级样品仍然是一个难以捉摸的目标，只有在亚开尔文温度下进行大量的实验才能实现。我们演示了在环境条件下从各种流体和固体有机样品的（5纳米）（3）体素检测NMR信号。我们使用了一个原子大小的磁场传感器，一个单一的氮空位缺陷中心，嵌入类似7纳米下的散装金刚石表面记录NMR光谱的各种样品放置在金刚石表面。其检测体积仅由10（4）个核自旋组成，净磁化仅为10（2）个统计极化自旋。
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 similar to 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.