Multiple twinned structures are common in low‐dimensional materials. They are intrinsically strained due to the geometrical constraint imposed by the non‐crystallographic fivefold symmetry. In this study, the strain distributions in sub‐10 nm fivefold twins of gold have been analyzed by combining aberration‐corrected transmission electron microscopy and first‐principles calculations. Bending of atomic planes has been measured by both experiments and calculations, and its contribution to the filling of the angular gap was shown to be size‐dependent.

中文翻译：

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五倍孪生金的尺寸依赖性应变

在低维材料中，多个孪生结构是常见的。由于非晶体五重对称所施加的几何约束，它们固有地受拉。在这项研究中，通过结合像差校正的透射电子显微镜和第一性原理计算，分析了金在10 nm以下五重孪晶中的应变分布。原子平面的弯曲已通过实验和计算进行了测量，其对角间隙填充的贡献已显示出与尺寸有关。