Size of the localized electron emission sites on a closed multiwalled carbon nanotube.

Authors :: Heeres EC
Oosterkamp TH
de Jonge N
Source :: Physical review letters [Phys Rev Lett] 2012 Jan 20; Vol. 108 (3), pp. 036804. Date of Electronic Publication: 2012 Jan 19.
Publication Year :: 2012
Abstract: We have measured the size of the localized electron emission sites on multiwalled carbon nanotubes (MWNTs) with caps closed by a fullerenelike structure. MWNTs were individually mounted on tungsten support tips and imaged with a field emission microscope (FEM). The magnification of the FEM was calibrated using electron ray tracing and verified by comparing transmission electron microscope images. The FEM image was also tested for effects of the lateral energy spread. We found ring-shaped emission areas with three flattened sides, of a radius of 1.7±0.3 nm, and separated by 5±1 nm.<br /> (© 2012 American Physical Society)

Subjects :: Fullerenes chemistry
Microscopy
Nanotubes, Carbon ultrastructure
Numerical Analysis, Computer-Assisted
Tungsten chemistry
Electrons
Nanotubes, Carbon chemistry
Particle Size

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