Probing the Nature of Defects in Graphene by Raman Spectroscopy
  Raman Spectroscopy is able to probe disorder in graphene through defect-activated peaks. It is of great interest to link these features to the nature of disorder. Here we present a detailed analysis of the Raman spectra of graphene containing different type of defects. We found that the intensity ratio of the D and D' peak is maximum (~ 13) for sp3-defects, it decreases for vacancy-like defects (~ 7) and reaches a minimum for boundaries in graphite (~3.5). 
Axel Eckmann, Alexandre Felten, Artem Mishchenko, Liam Britnell, Ralph   Krupke, Kostya S. Novoselov, Cinzia Casiraghi
cond-mat.mes-hall