OVERVIEW ON THE MAJOR RESEARCH ACTIVITIES ON CARBON NANOTUBES BEING DONE IN AMERICA, EUROPE AND ASIA - Carbon Nanotubes: From Bench Chemistry to Promising Biomedical Applications - page 288

(10, 0)

CNT

SuperSquare (SS)

CNT

(6, 6)

SuperGraphene (SG)

(9, 0)

CNT

(10, 0 )

SuperCubic (SC)

CNT

CNT

(6, 6)

SuperDiamond (SD)

Figure 9.26 Ordered networks based on CNTs (1D nanostructures). (a, b) Super-
square and super-graphene correspond to 2D networks, whereas (c, d) super-cubic
and super-diamond represent 3D network examples. The four families are constructed
from either armchair or zigzag CNTs in order to study the chirality effects. The red
rings point out the non-hexagonal carbon rings in each node. Figure modiied from
Romo-Herrera et al . 164 with permission. See also Colour Insert.

Y and T morphologies were also displayed by the coaxial structures
obtained from the combination of MWCNTs doped with N (MWCNTs-CNx)
as core element, and concentric carbon-based shells formed externally by
pyrolysis of toluene over Fe-coated MWCNTs-CNx. 163 The advantage of this
methodology is that it is possible to control both growth and dimensions of
these nanotube networks, with potential applications in nanoelectronics.