Abstract
Direct observation of the defect formation in carbon nanostructures during electron irradiation is carried out by high‐resolution transmission electron microscopy (HR‐TEM) on the double‐wall carbon nanotubes (DWNT) and carbon nanopeapods. The irradiation damage due to the knock‐on collision with high energy electron beam are found to be dependent on the curvature of the constituent graphen layers. The formation of knock‐on defects is more abundant at an inner tube than an outer tube in DWNT, and at a fullerene than a carbon nanotube in carbon nanopeapods. These results definitely indicate that the effects of electron irradiation in nanocarbon materials are quite more prominent on higher surface curvature, such as fullerene.
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