Structural Defects in Graphene: should we always look for perfection?

You can find the answer in ACS Nano, 2011, 5 (1), pp 26–41 by Florian Banhart, Jani Kotakoski, and Arkady  Krasheninnikov

The electronic and mechanical properties of graphene samples with high perfection of the atomic lattice are outstanding, but structural defects, which may appear during growth or processing, deteriorate the performance of graphene based devices. However, deviations from perfection can be useful ...

DOI: 10.1021/nn102598m

1 February 2011