Size of the Localized Electron Emission Sites on a Closed Multiwalled Carbon Nanotube

被引：7
|
作者：
Heeres, Erwin C. [1 ]
Oosterkamp, Tjerk H. [1 ]
de Jonge, Niels [2 ]
机构：
[1] Leiden Univ, Leiden Inst Phys, NL-2333 CA Leiden, Netherlands
[2] Vanderbilt Univ, Sch Med, Dept Mol Physiol & Biophys, Nashville, TN 37232 USA
来源：
PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 03期
关键词：
PENTAGONS; PATTERNS; TIPS; INTERFERENCE; BRIGHTNESS;
D O I：
10.1103/PhysRevLett.108.036804
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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.
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页数：5
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