Complex material systems in which microstructure and microchemistry are nonuniformly dispersed require three-dimensional (3D) rendering(s) to provide an accurate determination of the physio-chemical nature of the system. Current scanning transmission electron microscope (STEM)-based tomography techniques enable 3D visualization but can be time-consuming, so only select systems or regions are analyzed in this manner. Here, it is presented that through high-efficiency multidimensional STEM acquisition and reconstruction, complex point cloud-like microstructural features can quickly and effectively be reconstructed in 3D. The proposed set of techniques is demonstrated, analyzed, and verified for a high-chromium steel with heterogeneously situated features induced using high-energy neutron bombardment.

中文翻译：

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通过多维 STEM 采集和重建实现复杂微结构的高效三维可视化

微观结构和微观化学分布不均匀的复杂材料系统需要三维 (3D) 渲染，以准确确定系统的物理化学性质。当前基于扫描透射电子显微镜 (STEM) 的断层扫描技术可实现 3D 可视化，但可能非常耗时，因此仅以这种方式分析选定的系统或区域。在这里，提出通过高效的多维 STEM 采集和重建，可以快速有效地在 3D 中重建复杂的点云状微结构特征。所提出的一组技术针对使用高能中子轰击诱导的具有异质位置特征的高铬钢进行了演示、分析和验证。