Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any polycyclic aromatic hydrocarbon having the structure of part of a layer of graphite.
- n. An arbitrarily large-scale, one-atom-thick layer of graphite, an allotrope of carbon, that has remarkable electric characteristics.
Etymologies
Examples
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A single carbon layer of the graphitic structure can be considered as the final member of the series naphthalene, anthracene, coronene, etc. and the term graphene should therefore be used to designate the individual carbon layers in graphite intercalation compounds.
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Here, we report the production of a new graphene nanostructure-which we call a graphene nanomesh-that can open up a bandgap in a large sheet of graphene to create a semiconducting thin film.
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The term graphene should be used only when the reactions, structural relations or other properties of individual layers are discussed. "
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IUPAC compendium of technology states: "previously, descriptions such as graphite layers, carbon layers, or carbon sheets have been used for the term graphene ... it is not correct to use for a single layer a term which includes the term graphite, which would imply a three-dimensional structure.
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So graphene is essentially the basic building block.
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So the electrons behave in graphene as if they have zero mass.
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So the electrons in graphene behave as light waves and don't scatter the same way as electrons in regular materials.
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So they can travel in graphene much better than other materials.
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Graphene was discovered 2004 by Geim and Novoselov, and graphene is essential a single atomic sheet of carbon atoms, as you described, and when you stack these sheets up, you get graphite, which was well-known before this.
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It's similar to the stuff on your pencil, the graphite in there, but graphene is only one atom thick.
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