Abstract

The effect the length and diameter of model carbon nanotubes have on their properties of emission in a constant electric field is investigated within the concept of emission molecular orbitals generated by in plane-electronic conjugation in carbon nanotubes. It is shown that the critical strength of a constant electric field required for the field emission of electrons falls asymptotically upon an increase in the linear length of the nanotubes. Upon an increase in nanotube diameter, the critical field strength tends to a certain constant value determined by the chirality indices of the nanotubes. The results agree with experimental data.

中文翻译：

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研究碳纳米管的场发射电子模型对其几何参数变化的抵抗力

摘要

模型碳纳米管的长度和直径对其在恒定电场中的发射特性的影响在由碳纳米管中的平面电子共轭产生的发射分子轨道的概念内进行研究。结果表明，随着纳米管线性长度的增加，电子场发射所需的恒定电场的临界强度逐渐下降。随着纳米管直径的增加，临界场强趋向于由纳米管的手性指数确定的某个恒定值。结果与实验数据一致。