Is the peculiar behavior of 1/f noise in graphene the result of the interplay between band-structure and inhomogeneities?

Flicker noise in graphene based devices has attracted significant interest because of the very peculiar features it exhibits, in comparison with what is observed in more traditional materials. In particular, the behavior of the noise power spectral density (PSD) as a function of carrier concentration has turned out to be rather puzzling, especially in bilayer graphene, and several authors have made an effort to find an explanation for it. However, a comprehensive model, capable of explaining all observed features, is still lacking. In the present contribution, we shall try to provide a framework within which a more general understanding of flicker noise in graphene sheets and nanoribbons can be derived.