sknano.structures.SWNTBundle.Natoms_per_unit_cell

SWNTBundle.Natoms_per_unit_cell

Number of atoms in nanotube unit cell.

$$N_{\mathrm{atoms}} = 2N = \frac{4(n^2 + m^2 + nm)}{d_R}$$

where $N$ is the number of graphene hexagons mapped to the nanotube unit cell.