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By Saumitra Raj Mehrotra1, Gerhard Klimeck1

1. Purdue University



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Graphene is a one-atom-thick planar sheet of sp2-bonded carbon atoms that are densely packed in a honeycomb crystal lattice. Graphene sheets are weakly bonded to other graphene layers above and below to form Graphite. The difference between two layers is approximately 0.335 nm [1].


Graphite can conduct electricity due to the vast electron delocalization within the carbon layers (a phenomenon called aromaticity). These valence electrons are free to move; as a result, they are able to conduct electricity. However, this only occurs within the plane of the layers.


Image rendered using nanoHUB tool Crystal Viewer (


[1] P. Delhaes (2001). Graphite and Precursors. CRC Press

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  • Saumitra Raj Mehrotra; Gerhard Klimeck (2010), "Graphite,"

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