Solution nuclear magnetic resonance spectroscopy on a nanostructured diamond chip.
Solution nuclear magnetic resonance spectroscopy on a nanostructured diamond chip.
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纳米结构金刚石芯片上的溶液核磁共振波谱。
DOI:
10.1038/s41467-017-00266-4
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发表时间:
2017-08-04
影响因子:
16.6
通讯作者:
Acosta VM
中科院分区:
文献类型:
--
作者:
Kehayias P;Jarmola A;Mosavian N;Fescenko I;Benito FM;Laraoui A;Smits J;Bougas L;Budker D;Neumann A;Brueck SRJ;Acosta VM
Sensors using nitrogen-vacancy centers in diamond are a promising tool for small-volume nuclear magnetic resonance (NMR) spectroscopy, but the limited sensitivity remains a challenge. Here we show nearly two orders of magnitude improvement in concentration sensitivity over previous nitrogen-vacancy and picoliter NMR studies. We demonstrate NMR spectroscopy of picoliter-volume solutions using a nanostructured diamond chip with dense, high-aspect-ratio nanogratings, enhancing the surface area by 15 times. The nanograting sidewalls are doped with nitrogen-vacancies located a few nanometers from the diamond surface to detect the NMR spectrum of roughly 1 pl of fluid lying within adjacent nanograting grooves. We perform 1H and 19F nuclear magnetic resonance spectroscopy at room temperature in magnetic fields below 50 mT. Using a solution of CsF in glycerol, we determine that 4 ± 2 × 1012 19F spins in a 1 pl volume can be detected with a signal-to-noise ratio of 3 in 1 s of integration. Nitrogen vacancy (NV) centres in diamond can be used for NMR spectroscopy, but increased sensitivity is needed to avoid long measurement times. Kehayias et al. present a nanostructured diamond grating with a high density of NV centres, enabling NMR spectroscopy of picoliter-volume solutions.
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DOI:
10.1073/pnas.0711505105
发表时间:
2008-02-19
影响因子:
11.1
作者:
Ledbetter, M. P.;Savukov, I. M.;Pines, A.
通讯作者:
Pines, A.
影响因子:
64.8
作者:
Li, H;Eddaoudi, M;Yaghi, OM
通讯作者:
Yaghi, OM
影响因子:
12.5
作者:
Loretz, M.;Boss, J. M.;Degen, C. L.
通讯作者:
Degen, C. L.
影响因子:
7.4
作者:
Krojanski, Hans Georg;Lambert, Joerg;Hergenroeder, Roland
通讯作者:
Hergenroeder, Roland
影响因子:
3.5
作者:
Ledbetter, Micah;Budker, Dmitry
通讯作者:
Budker, Dmitry