期刊
NANOTECHNOLOGY
卷 28, 期 26, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aa730b
关键词
bi-layer and multi-layer graphene; chemical vapor deposition; growth mechanism; liquid copper
资金
- National Basic Research Program of China [2016YFA0200101, 2013CBA01602, 2013CB933500]
- National Natural Science Foundation of China [21633012, 21273243, 51233006, 61390500]
- Beijing Municipal Science & Technology Commission [Z161100002116025]
- Chinese Academy of Sciences
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB12030100]
A layered material grown between a substrate and the upper layer involves complex interactions and a. confined reaction space, representing an unusual growth mode. Here, we show. multi-layer graphene domains. grown on liquid or solid Cu by the. chemical vapor deposition method via this 'double-substrate' mode. We demonstrate the interlayer-induced coupling effect on the twist angle in bi-and multi-layer graphene. We discover dramatic growth disunity for different graphene layers, which is explained by the ideas of a chemical 'gate' and a. material transport process within a confined space. These key results lead to a consistent framework for understanding the. dynamic evolution of multi-layered graphene flakes and tailoring the layer-to-layer growth for practical applications.
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