Fine-structured field emission images originating from coherently scattering of electrons within a multi-walled carbon nanotube |
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Authors: | Ping Wu |
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Institution: | State Key Lab of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Physics and Engineering, Sun Yat-Sen (Zhongshan) University, Guangzhou 510275, People's Republic of China |
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Abstract: | High resolution field emission image of a single multi-walled carbon nanotube was studied by field emission microscopy. The images contain patterns consisting of rather ordered bright fringes. We propose a model based on coherent electron scattering to explain the observed field emission image. The emitted electrons will undergo coherent scattering within the cap region of a multi-wall carbon nanotube, which may be viewed as elastic scattering by a polycrystalline structure with an infinite size. This study is helpful for understanding the physical mechanism of field emission of carbon nanotube. |
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Keywords: | 73 63 Fg 68 37 Vj 81 05 Uw |
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