核磁共振波谱
光谱学
旋转
核磁共振
拉莫尔进动
电子
放松(心理学)
自由感应衰变
超精细结构
化学
碳-13核磁共振卫星
质子
脉冲电子顺磁共振
自旋回波
横向弛豫优化光谱
磁场
氟-19核磁共振
原子物理学
物理
凝聚态物理
磁共振成像
医学
心理学
社会心理学
量子力学
放射科
作者
Benjamin Fortman,Laura Mugica-Sanchez,Noah Tischler,Cooper Selco,Yuxiao Hang,K. Holczer,Susumu Takahashi
摘要
The nitrogen-vacancy (NV) center has enabled widespread study of nanoscale nuclear magnetic resonance (NMR) spectroscopy at low magnetic fields. NMR spectroscopy at high magnetic fields significantly improves the technique’s spectral resolution, enabling clear identification of closely related chemical species. However, NV-detected NMR is typically performed using AC sensing through electron spin echo envelope modulation, a hyperfine spectroscopic technique that is not feasible at high magnetic fields. Within this paper, we have explored an NV-detected NMR technique for applications of high field NMR. We have demonstrated optically detected magnetic resonance with the NV Larmor frequency of 230 GHz at 8.3 T, corresponding to a proton NMR frequency of 350 MHz. We also demonstrated the first measurement of electron–electron double resonance detected NMR using the NV center and successfully detected 13C nuclear bath spins. The described technique is limited by the longitudinal relaxation time (T1), not the transverse relaxation time (T2). Future applications of the method to perform nanoscale NMR of external spins at 8.3 T and even higher magnetic fields are also discussed.
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