Low-coordinate surface sites, such as those present on high-index step edges, often exhibit chemical reactivity that markedly differs from more close-packed facets. To understand the site-specific reactivity, insight into the three-dimensional atomic arrangement of step edges is needed. Here, we employ atomic-resolution transmission electron microscopy (TEM) of nanoparticles in combination with scanning tunneling microscopy (STM) of a single crystal surface to uncover the structure of prevalent step edges on the anatase TiO₂ (001) surface.

中文翻译：

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原子分辨TEM和STM研究锐钛矿型TiO ₂（001）表面的台阶边缘结构

低坐标的表面位置（例如高折射率台阶边缘上的位置）通常显示出与更密排的刻面明显不同的化学反应性。要了解特定位置的反应性，需要深入了解台阶边缘的三维原子排列。在这里，我们采用纳米粒子的原子分辨率透射电子显微镜（TEM）结合单晶表面的扫描隧道显微镜（STM）来揭示锐钛矿型TiO ₂（001）表面上普遍存在的阶梯状边缘结构。