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Appl. Sci. 2018, 8(12), 2518;

Formation of Micro- and Nano-Trenches on Epitaxial Graphene

State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China
Collaborative Innovation Center of Suzhou Nano Science and Technology, Xi’an Jiaotong University, Suzhou 215123, China
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
Authors to whom correspondence should be addressed.
Received: 5 November 2018 / Revised: 16 November 2018 / Accepted: 19 November 2018 / Published: 6 December 2018
(This article belongs to the Section Materials)
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Catalytic cutting by metal particles under an atmosphere environment is a promising method for patterning graphene. Here, long straight micro-trenches are produced by the sliding of metal particles (Ag and In) on epitaxial graphene (EG) substrate under the ultra-high vacuum (UHV) annealing. The morphology and orientation relationship of the micro-trenches are observed by scanning electron microscopy (SEM), and the damage effect is confirmed by Raman scattering. Atomic force microscopy (AFM) and scanning tunneling microscopy (STM) are further adopted to atomically characterize the sliding behavior of metal particles, which resembles a similar etching method and can be used to make graphene nano-trenches. The study provides us with more understanding about the mutual effects between metals on EG, which hopes to pave the way for the applications of graphene-based devices. View Full-Text
Keywords: trench; epitaxial grapheme (EG); metal particles; sliding trench; epitaxial grapheme (EG); metal particles; sliding

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Hu, T.; Liu, X.; Ma, D.; Wei, R.; Xu, K.; Ma, F. Formation of Micro- and Nano-Trenches on Epitaxial Graphene. Appl. Sci. 2018, 8, 2518.

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