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[Interface Science and Technology] Graphene Surfaces - Particles and Catalysts Volume 27 || Graphene-Based Metal Particles
摘要： Graphene is considered a new member of the carbon materials family. Graphene is made solely of monolayers of sp2 hybridized carbon atoms densely ordered in a honeycomb crystal lattice, from which graphitic materials of various dimensions, e.g., zero-dimensional (0D) fullerenes, 1D nanotubes, and 3D graphite, can be built up. Graphene exhibits diverse electronic, thermal, and optical properties, including significant carrier mobility at room temperature (z10,000 cm2 V(cid:1)1 s(cid:1)1), theoretical specific surface area as high as 2630 m2 g(cid:1)1, and Young’s modulus as high as 1 TPa, along with superior thermal conductivity as high as 3000e5000 W mK(cid:1)1, resulting in its diverse potential applications in various fields such as chemical sensors, electronic devices, energy storage and conversion, catalysts, etc. Numerous endeavors have been being made to develop versatile and dependable physical and chemical fabrication techniques for the synthesis of graphene and its derivatives. So far, extensively utilized techniques, including chemical vapor deposition, epitaxial growth, thermal annealing approaches, the arc-discharge strategy, etc., have been successfully employed for the synthesis of graphene nanosheets (GNs) possessing great quality, mass production ability, and cost efficiency [1].
关键词： Catalysts,Metal Particles,Energy Storage,Graphene,Nanocomposites,Sensors
更新于2025-09-23 15:21:21
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Formation of Micro- and Nano-Trenches on Epitaxial Graphene
摘要： 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 con?rmed 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.
关键词： epitaxial grapheme (EG),sliding,metal particles,trench
更新于2025-09-04 15:30:14