Features of electron reflection by layer of carbon nanotubes

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Аннотация

The anisotropic properties of a layer of carbon nanotubes upon electron reflection have been studied. Only a small part of the incident electrons is found to reflect from a target with a surface layer of oriented carbon nanotubes. Reflection occurs only from a layer of horizontally oriented nanotubes at an angle of incidence greater than 80° and vertically oriented nanotubes at an angle of incidence less than 10°. The effect is explained by peculiarities of the formation of an electron flux in the surface layers of the target.

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Авторлар туралы

N. Novikov

Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics

Хат алмасуға жауапты Автор.
Email: nvnovikov65@mail.ru
Ресей, 119991, Moscow

N. Chechenin

Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics

Email: nvnovikov65@mail.ru
Ресей, 119991, Moscow

A. Shirokova

Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics

Email: nvnovikov65@mail.ru
Ресей, 119991, Moscow

Әдебиет тізімі

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Жүктеу
2. Fig. 1. Dependence of the reflection coefficient F(E,α = 0) on the angle of incidence when reflecting from a homogeneous carbon target of electrons with energy: 11 (1); 50 keV (2).

Жүктеу (72KB)
Метадеректер
3. Fig. 2. Variants of the arrangement of a cluster of NCNT = 91 single-layer CNTs with respect to a beam of electrons incident on the target at an angle α to the normal, which is oriented: a – along the axis of the tubes; b – perpendicular to the axis of the tubes at an angle between the scattering plane and the direction of the CNT φ = 0°.

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Метадеректер
4. Fig. 3. Dependence on the azimuth angle of the reflection coefficient by a layer of horizontally oriented CNTs. Electrons with energy E = 20 keV fall to the surface at an angle α: 1 – 80°; 2 – 85°; 3 – 88°.

Жүктеу (109KB)
Метадеректер
5. Fig. 4. Dependence on the angle of incidence of the reflection coefficient from a target of horizontally oriented CNTs at φ = 0° of electrons with energy: 11 (1); 20 (2); 30 (3); 50 keV (4). The calculation errors correspond to the size of the symbols on curve 4.

Жүктеу (125KB)
Метадеректер
6. Fig. 5. Dependence of the reflection coefficient on the angle of incidence during electron scattering by a target of vertically oriented CNTs. Notation as in Fig. 4.

Жүктеу (88KB)
Метадеректер

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