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Substrate-regulated morphology of graphene

2009/07/31 by Teng Li, Zhao Zhang · 3 citations
Materials Science · Physics and Astronomy · #Composite material #Geology #Graphene #Graphene nanoribbons #Graphene oxide paper #Graphene research and applications #Limiting #Materials science #Morphology (biology) #Nanotechnology #Quantum and electron transport phenomena #Substrate (aquarium) #Surface and Thin Film Phenomena #Surface energy #Surface finish #Surface roughness #cond-mat.mes-hall #cond-mat.mtrl-sci

paper · pdf · doi:10.1088/0022-3727/43/7/075303

published as Journal of Physics D: Applied Physics, 43, 075303 (2010). · 23 pages, 5 figures

arxiv created 2010/01/08 · openalex publication_date 2010/02/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We delineate a general theoretical framework to determine the substrate-regulated graphene morphology through energy minimization. We then apply such a framework to study the graphene morphology on a substrate with periodic surface grooves. Depending on the substrate surface roughness and the graphene–substrate interfacial bonding energy, the equilibrium morphology of graphene ranges from (1) closely conforming to the substrate, to (2) remaining flat on the substrate. Interestingly, in certain cases, the graphene morphology snaps between the above two limiting states. Our quantitative results envision a promising strategy to precisely control the graphene morphology over large areas. The rich features of the substrate-regulated graphene morphology (e.g. the snap-through instability) can potentially lead to new design concepts of functional graphene device components.

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