Ab initio investigation of optical properties in triangular graphene -   boron nitride core-shell nanostructures
  We calculate the optical properties of atomic-sized core-shell graphene - boron nitride nanoflakes with triangular shaped crossection using the density functional theory. The optical properties can be tuned by using different sizes and proportions of the core-shell materials. Anisotropic effects manifested in the absorption of unpolarized light with different orientations of the optical vector are pointed out. 
Andreea A. Nila, George Alexandru Nemnes, Andrei Manolescu
cond-mat.mes-hall