| Title | Large Single-Crystal Cu Foils with High-Index Facets by Strain-Engineered Anomalous Grain Growth |
| Authors | Li, Yanglizhi Sun, Luzhao Chang, Zhenghua Liu, Haiyang Wang, Yuechen Liang, Yu Chen, Buhang Ding, Qingjie Zhao, Zhenyong Wang, Ruoyu Wei, Yujie Peng, Hailin Lin, Li Liu, Zhongfan |
| Affiliation | Peking Univ, Coll Chem & Mol Engn, Ctr Nanochem, Beijing Sci & Engn Ctr Nanocarbons,Beijing Natl L, Beijing 100871, Peoples R China Peking Univ, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China Beijing Graphene Inst, Beijing 100095, Peoples R China Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England |
| Keywords | COPPER GRAPHENE CO2 SURFACES LAYER |
| Issue Date | Jun-2020 |
| Publisher | ADVANCED MATERIALS |
| Abstract | The rich and complex arrangements of metal atoms in high-index metal facets afford appealing physical and chemical properties, which attracts extensive research interest in material science for the applications in catalysis and surface chemistry. However, it is still a challenge to prepare large-area high-index single crystals in a controllable and cost-efficient manner. Herein, entire commercially available decimeter-sized polycrystalline Cu foils are successfully transformed into single crystals with a series of high-index facets, relying on a strain-engineered anomalous grain growth technique. The introduction of a moderate thermal-contact stress upon the Cu foil during the annealing leads to the formation of high-index grains dominated by the thermal strain of the Cu foils, rather than the (111) surface driven by the surface energy. Besides, the designed static gradient of the temperature enables the as-formed high-index grain seed to expand throughout the entire Cu foil. The as-received high-index Cu foils can serve as the templates for producing high-index single-crystal Cu-based alloys. This work provides an appealing material basis for the epitaxial growth of 2D materials, and the applications that require the unique surface structures of high-index metal foils and their alloys. |
| URI | http://hdl.handle.net/20.500.11897/607062 |
| ISSN | 0935-9648 |
| DOI | 10.1002/adma.202002034 |
| Indexed | SCI(E) |
| Appears in Collections: | å å¦ä¸ å å å·¥ç¨ å¦é ¢ 前沿交叉学科研究院 |
