Department of Physics, University of South Florida, Tampa, Florida 33620, USA.
Nano Lett. 2011 Feb 9;11(2):518-22. doi: 10.1021/nl103383b. Epub 2010 Dec 23.
A novel growth mechanism of graphene on Ni(111) has been discovered that occurs at temperatures below 460 °C. At these conditions, a surface-confined nickel-carbide phase coexists with single layer graphene. The graphene grows by in-plane transformation of the carbide along a one-dimensional phase-boundary, which is distinctively different from known growth processes on other transition metals and on Ni above 460 °C, where carbon atoms attach to "free" edges of graphene islands.
一种新的石墨烯在 Ni(111) 上生长的机制已经被发现，它发生在 460°C 以下的温度下。在这些条件下，表面受限的镍碳化物相与单层石墨烯共存。石墨烯通过碳化物在一维相界上的面内转变生长，这与其他过渡金属和 Ni 上高于 460°C 时已知的生长过程明显不同，在这些过程中，碳原子附着在石墨烯岛的“自由”边缘上。
