Fig. 1: Phenine nanotube molecules.
From: A nitrogen-doped nanotube molecule with atom vacancy defects

a (12,12)-pNT. b Nitrogen-doped (12,12)-NpNT.
From: A nitrogen-doped nanotube molecule with atom vacancy defects

a (12,12)-pNT. b Nitrogen-doped (12,12)-NpNT.