Figure 4.

Graphene hydrogenation progress. (a) A graphene layer, where delocalized electrons are free to move between carbon atoms, is exposed to a beam of hydrogen atoms. (b) In nonconductive graphane, hydrogen atoms bond to their electrons with electrons of carbon atoms and pull the atoms out of the plane [57].

Zhou et al. Nanoscale Research Letters 2014 9:26   doi:10.1186/1556-276X-9-26
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