For the armchair nanotube, the geometry relationships satisfy
T] acting on the armchair nanotube can be related to bond force f as [F.
The load-strain relationship for a zigzag tube can be calculated in a similar manner to the armchair nanotube described earlier.
7% were predicted for (12, 12) armchair nanotube and 32 GPa nm and 15.
The angle [alpha] and [beta] of armchair nanotubes have been found from ab initio calculations  where [alpha] [approximately equal to] 2[pi]/3 and [beta] = [pi] - arc cos[0.
Among the topics are synthesizing bowl-shaped and basket-shaped fullerene fragments with benzannulated enyne-allenes, experimental and calculated properties of fullerene and nanotube fragments, hemispherical geodesic polyarenes as attractive templates for the chemical synthesis of uniform-diameter armchair nanotubes
, conjugated molecular belts based on three-dimensional benzannulene systems, and toward fully unsaturated double-stranded cycles.
Thus the vectors (0,n) and (m,0) denote zig-zag nanotubes, the vectors (m,m) or (n,n) denote armchair nanotubes
and all other vectors correspond to chiral nanotubes.
9 HEMISPHERICAL GEODESIC POLYARENES: ATTRACTIVE TEMPLATES FOR THE CHEMICAL SYNTHESIS OF UNIFORM-DIAMETER ARMCHAIR NANOTUBES