  We analyze the effects of sp^2/sp^3 bond-aspect ratio on the transport
properties of amorphous carbon quasi-1D structures where structural disorder
varies in a very non-linear manner with the effective bandgap. Using a
tight-binding approach the calculated electron transmission showed a high
probability over a wide region around the Fermi-level for sp^2-rich carbon and
also distinct peaks close to the band edges for sp^3-rich carbon structures.
This model shows a sharp rise of the structure resistance with the increase of
sp^3C % followed by saturation in the wide bandgap regime for carbon
superlattice-like structures and suggests the tuneable characteristic time of
carbon-based devices.
