This review examines its mechanical strength, superior electrical and thermal conductivity, and high optical transparency. Graphene is pure carbon in one atom thick of a single layer of graphite, a very thin and nearly transparent sheet It conducts heat and electricity with excellent efficiency, and it is extreme for its very low weight. We give results for the monolayer systems of graphene and boronitrene, and we also include results for si, ge, gec, and sic in the isostructural honeycomb structure for comparison. Major uncertainties persist whether slipping or sticking dominates experimental observation, both between graphene and solid media, and between the layers of bilayer and multilayer graphene The paper concludes with a short discussion of continuum and atomistic models of graphene.
The mechanical 563 properties of bilayer and multilayer graphene depend critically on the issue of slipping or 564 binding between layers This review includes three major categories. This article provides an overview of graphene materials regarding its basic structure, preparation methods, and unique properties The four commonly used methods for preparing graphene are compared, and the advantages and disadvantages of each are expounded and briefly summarized. What makes graphene so special is its sp2 hybridisation and very thin atomic thickness (of 0.345 nm) These properties are what enable graphene to break so many records in terms of strength, electricity and heat conduction (as well as many others).
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