Electron transport in Ar+‐irradiated single wall carbon nanotubes

We study the effect of Ar + -irradiation on electrical transport in an individual single wall carbon nanotube (SWNT), a thin SWNT network and a thick SWNT film. The damage to SWNT structure induced by Ar + -irradiation is characterized by Raman spectroscopy. The electrical conductance both in an individual SWNT and in a thin SWNT network is strongly reduced by highly energetic Ar + ions. On contrary, a thick SWNT film exhibits an increase of its conductivity as well as of its Young modulus after irradiation.