The options to define the input parameters for the construction of the capped nanotube are displayed in the Calculations–Input as shown in Fig 4:
The following input options can be set for the capped nanotube construction.
the chirality ()
the length of the nanotube ()
the number of cap carbon atoms and dual lattice points (or enabled the estimation based upon the nanotube density)
the seed for the initial random cap point placement
the force cutoff relating to the dual lattice force field (Section 4.1)