Wednesday, November 19, 2014

material science - How is graphene a 2D substance?


How is graphene a 2D substance? It has length, width and some thickness to it, else it would be invisible. Why is it considered a 2D substance?



Answer



Because its structure displays translational symmetry in 2D. Atoms themselves are 3D as in other materials, but they are placed on a 2D flat plane. Compare to 1D Fullerenes.


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