Graphene nanoribbons
(also called nano-graphene
ribbons), often abbreviated gnrs, are thin strips of graphene or unrolled single-walled carbon nanotubes.
The graphene
ribbons were originally introduced as a theoretical model by Mitsutaka Fujita
et.al. To examine the edge and nanoscale
size
effect in graphene.
Their electronic
states largely depend on the edge structures (armchair or zigzag). Zigzag edges provide the edge
localized state
with non-bonding molecular
orbitals near the Fermi energy.
They are expected to have large changes in optical
and electronic
properties from quantization.
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