THREE-DIMENSIONAL IMAGING WITH A NUCLEAR MAGNETIC RESONANCE FORCE MICROSCOPE
THREE-DIMENSIONAL IMAGING WITH A NUCLEAR MAGNETIC RESONANCE FORCE MICROSCOPE
复制标题
使用核磁共振力显微镜进行三维成像
DOI：
10.1063/1.361089
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发表时间：
1996
影响因子：
3.2
通讯作者：
D. Rugar
中科院分区：
文献类型：
--
作者：
O. Züǵer;S. Hoen;C. S. Yannoni;D. Rugar
磁共振力显微镜用于展示具有微米级空间分辨率的三维核磁共振成像。将样品安装在氮化硅悬臂梁上，该悬臂梁用作微机械力传感器。附近的磁性尖端产生22 G/μm的场梯度。通过相对于样品横向扫描磁性尖端和改变自旋激发的射频频率，生成样品中1H自旋的三维磁共振力图。样品的真实的空间自旋密度通过反卷积技术从力图重建。实验中获得的轴向空间分辨率为1.3 μm。
A magnetic resonance force microscope was used to demonstrate three‐dimensional nuclear magnetic resonance imaging with micrometer‐scale spatial resolution. The sample was mounted on a silicon nitride cantilever that served as a micromechanical force sensor. A nearby magnetic tip generated a field gradient of 22 G/μm. A three‐dimensional magnetic resonance force map of the 1H spins in the sample was produced by lateral scanning of the magnetic tip relative to the sample and by varying the rf frequency of the spin excitation. The real‐space spin density of the sample was reconstructed from the force map by means of a deconvolution technique. The spatial resolution achieved in the experiment was ∼3 μm in the axial direction.