The author has performed a theoretical analysis of the electronic structure of an elbow junction in single-walled “armchair” (4,4) and “zigzag” (7,0) carbon nanotubes consisting of 131 carbon atoms, as well as in pure carbon “armchair” (4,4) nanotubes consisting of 128 atoms, and “zigzag” nanotubes consisting of 126 atoms. It is shown that in the case of the elbow junction under study, a metal-semiconductor transition does not take place.

中文翻译：

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碳纳米管中肘节的电子结构

作者对由 131 个碳原子组成的单壁“扶手椅”(4,4) 和“锯齿形”(7,0) 碳纳米管以及纯碳中的肘接点的电子结构进行了理论分析“扶手椅”(4,4) 纳米管由 128 个原子组成，“之字形”纳米管由 126 个原子组成。结果表明，在所研究的弯头连接的情况下，不会发生金属-半导体转变。