2021 年 64 巻 1 号 p. 40-46
Isolated single-walled carbon nanotubes (SWNTs) adsorbed on an atomically flat and clean Cu(111) surface were studied by means of ultra-high vacuum (UHV) scanning tunneling microscopy and spectroscopy (STM / STS) at 300 K. A dispersion of SWNTs without unzipping molecules was sprayed in vacuum. Subsequently upon annealing of 800 K atomically flat terraces were recovered. STM/STS measurements revealed that some of the SWNTs had similar morphology and electronic local density of states as graphene nanoribbons (GNRs), indicating that the unzipping process could occur even without unzipping molecules.
