Unconventional Atomic Structure of Graphene Sheets on Solid Substrates

doi:10.1002/smll.201902637

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	Unconventional Atomic Structure of Graphene Sheets on Solid Substrates
	Zhang, Jinjin; Yang, Yizhou; Yang, Shuo; Song, Jie; Wang, Ying; Liu, Xiaoguo; Yang, Qingqing; Shen, Yue; Wang, Shuo; Yang, Haijun; Lu, Junhong; Li, Bin; Fang, Haiping; Lal, Ratnesh; Czajkowsky, Daniel M.; Hu, Jun; Shi, Guosheng; Zhang, Yi
	2019-10
发表期刊	SMALL
ISSN	1613-6810
卷号	15 期号:42
摘要	The atomic structure of free-standing graphene comprises flat hexagonal rings with a 2.5 angstrom period, which is conventionally considered the only atomic period and determines the unique properties of graphene. Here, an unexpected highly ordered orthorhombic structure of graphene is directly observed with a lattice constant of approximate to 5 angstrom, spontaneously formed on various substrates. First-principles computations show that this unconventional structure can be attributed to the dipole between the graphene surface and substrates, which produces an interfacial electric field and induces atomic rearrangement on the graphene surface. Further, the formation of the orthorhombic structure can be controlled by an artificially generated interfacial electric field. Importantly, the 5 angstrom crystal can be manipulated and transformed in a continuous and reversible manner. Notably, the orthorhombic lattice can control the epitaxial self-assembly of amyloids. The findings reveal new insights about the atomic structure of graphene, and open up new avenues to manipulate graphene lattices.
DOI	10.1002/smll.201902637
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/34107
专题	盐湖资源与化学实验室中国科学院青海盐湖研究所
推荐引用方式 GB/T 7714	Zhang, Jinjin,Yang, Yizhou,Yang, Shuo,et al. Unconventional Atomic Structure of Graphene Sheets on Solid Substrates[J]. SMALL,2019,15(42).
APA	Zhang, Jinjin.,Yang, Yizhou.,Yang, Shuo.,Song, Jie.,Wang, Ying.,...&Zhang, Yi.(2019).Unconventional Atomic Structure of Graphene Sheets on Solid Substrates.SMALL,15(42).
MLA	Zhang, Jinjin,et al."Unconventional Atomic Structure of Graphene Sheets on Solid Substrates".SMALL 15.42(2019).

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