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Crystals 2017, 7(2), 35; doi:10.3390/cryst7020035

A Scheme for the Growth of Graphene Sheets Embedded with Nanocones

1
Institute of Modern Physics, Fudan University, Shanghai 200433, China
2
Applied Ion Beam Physics Laboratory, Fudan University, Shanghai 200433, China
3
Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China
*
Author to whom correspondence should be addressed.
Academic Editor: Hiroki Nada
Received: 16 November 2016 / Revised: 23 December 2016 / Accepted: 18 January 2017 / Published: 15 February 2017
(This article belongs to the Special Issue Advances in Computer Simulation Studies on Crystal Growth)
View Full-Text   |   Download PDF [2936 KB, uploaded 15 February 2017]   |  

Abstract

Based on the monolayer growth mode of graphene sheets (2D crystal) by chemical vapor deposition (CVD) on a Cu surface, it should be possible to grow the 2D crystal embedded with single wall carbon nanocones (SWCNC) if nano-conical pits are pre-fabricated on the surface. However, a previous experiment showed that the growing graphene sheet can cross grain boundaries without bending, which seems to invalidate this route for growing SWCNCs. The criterion of Gibbs free energy was applied in the present work to address this issue, showing that the sheet can grow into the valley of a boundary if the boundary has a slope instead of a quarter-turn shape, and SWCNCs can be obtained by this route as long as the lower diameter of the pre-fabricated pit is larger than 1.6 nm and the deposition temperature is higher than 750 K. View Full-Text
Keywords: graphene; carbon nanocones; molecular dynamics simulation graphene; carbon nanocones; molecular dynamics simulation
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Liu, Y.-P.; Li, J.-T.; Song, Q.; Zhuang, J.; Ning, X.-J. A Scheme for the Growth of Graphene Sheets Embedded with Nanocones. Crystals 2017, 7, 35.

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