@article{oai:nagoya.repo.nii.ac.jp:00007102,
 author = {Saito, Yahachi and Tsujimoto, Yuhki and Koshio, Akira and Kokai, Fumio},
 issue = {21},
 journal = {APPLIED PHYSICS LETTERS},
 month = {May},
 note = {Electron emission from multiwall carbon nanotubes (CNTs) with a cone-shaped tip, on the apex of which five pentagons are present, has been studied by field emission microscopy (FEM). Two types of FEM patterns were observed: one is a well-defined “pentagon” pattern that is typically observed for ordinal multiwall CNTs though the number of pentagons is five in the case of cone-shaped CNTs, and the other is a “dim” pattern that is usually observed for single-wall CNTs. Appearance voltages of the respective patterns and transmission electron microscopy study of the cone-shaped CNTs suggest that the pentagon patterns originate from CNTs with apex radii larger than approximately 2 nm while the dim patterns originate from those with the smaller apex radii.},
 pages = {213108--213108},
 title = {Field emission patterns from multiwall carbon nanotubes with a cone-shaped tip},
 volume = {90},
 year = {2007}
}