In Situ Observations of Freestanding Single‐Atom‐Thick Gold Nanoribbons Suspended in Graphene,Advanced Materials Interfaces

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In Situ Observations of Freestanding Single‐Atom‐Thick Gold Nanoribbons Suspended in Graphene
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2020-05-19 , DOI: 10.1002/admi.202000436
Liang Zhao ₁ , Huy Q. Ta ₂ , Rafael G. Mendes ₂ , Alicja Bachmatiuk _{1,

3,

4} , Mark H. Rummeli _{1,

2,

3,

5}

Affiliation

Bulk gold's attributes of relative chemical inertness, rarity, relatively low melting point and its beautiful sheen make it a prized material for humans. Recordings suggest it was the first metal employed by humans dating as far back to the late Paleolithic period ≈40 000 BC. However, at the nanoscale gold is expected to present new and exciting properties, not least in catalysis. Moreover, recent studies suggest a new family of single‐atom‐thick two‐dimensional (2D) metals exist. This work shows single‐atom‐thick freestanding gold membranes and nanoribbons can form as suspended structures in graphene pores. Electron irradiation is shown to lead to changes to the graphene pores which lead to dynamic changes of the gold membranes which transition to a nanoribbon. The freestanding single‐atom‐thick 2D gold structures are relatively stable to electron irradiation for extended periods. The work should advance the development of 2D gold monolayers significantly.

中文翻译：

石墨烯中悬浮的单原子厚金纳米带的原位观察

散装金的相对化学惰性，稀有性，相对较低的熔点及其美丽的光泽使它成为人类珍贵的材料。记录表明，它是人类最早使用的金属，其历史可追溯至旧石器时代晚期≈40000 BC。然而，在纳米级，金有望呈现出令人兴奋的新特性，尤其是在催化方面。此外，最近的研究表明存在一个新的单原子厚的二维（2D）金属族。这项工作表明单原子厚的独立式金膜和纳米带可以作为悬浮结构在石墨烯孔中形成。已显示电子辐照会导致石墨烯孔的变化，从而导致金膜的动态变化，从而转变为纳米带。独立的单原子厚二维金结构在较长时间内对电子辐照相对稳定。这项工作应大大推动2D金单层的发展。

更新日期：2020-05-19

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