Premium
Study on structure of heat‐treated fullerene nanowhiskers and their field electron emission characteristics
Author(s) -
Asaka Koji,
Nakayama Tadachika,
Miyazawa Kun'ichi,
Saito Yahachi
Publication year - 2012
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.3868
Subject(s) - field electron emission , transmission electron microscopy , raman spectroscopy , materials science , scanning electron microscope , fullerene , graphite , electron microscope , nanotechnology , spectroscopy , electron , analytical chemistry (journal) , chemistry , composite material , optics , physics , organic chemistry , chromatography , quantum mechanics
Single‐crystalline fullerene nanowhiskers heated in a high vacuum at 2373K were characterized by scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. The field electron emission from the heat‐treated nanowhiskers was studied by field emission microscopy. The outer shape of the heat‐treated nanowhiskers maintained its original morphology before heat treatment, that is, a straight shape with a uniform diameter along the long axis and a hexagonal cross section, whereas the inner structure was transformed from a single crystal of C 60 to glassy carbon composed of crumpled graphitic layers. The field emission microscopy images of the heat‐treated nanowhiskers, reflecting the atomic structures of the crumpled graphitic layers in the emitting region, exhibited striped patterns that are characteristic of graphite emitters. Copyright © 2011 John Wiley & Sons, Ltd.