Unzipping Carbon Nanotubes to Sub‐5‐nm Graphene Nanoribbons on Cu(111) by Surface Catalysis

作者：Wenjie Dong, Xin Li, Shuai Lu, Jie Li, Yansong Wang, Yansong Wang, Mingjun Zhong, Xu Dong, Zhen Xu, Qian Shen, Song Gao, Kai Wu, Lian‐Mao Peng, Shimin Hou, Zhiyong Zhang, Yajie Zhang, Yongfeng Wang, Yongfeng Wang · 发表于：Small · 年份：2023 · DOI：10.1002/smll.202308430 · 被引用次数：12 · 研究领域：Graphene research and applications、Molecular Junctions and Nanostructures、Quantum and electron transport phenomena

Graphene nanoribbons (GNRs) are promising in nanoelectronics for their quasi-1D structures with tunable bandgaps. The methods for controllable fabrication of high-quality GNRs are still limited. Here a way to generate sub-5-nm GNRs by annealing single-walled carbon nanotubes (SWCNTs) on Cu(111) is demonstrated. The structural evolution process is characterized by low-temperature scanning tunneling microscopy. Substrate-dependent measurements on Au(111) and Ru(0001) reveal that the intermediate strong SWCNT-surface interaction plays a pivotal role in the formation of GNRs.