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依据介观物理学的基本概念、半经典电子输运理论和碳纳米管的电子结构，对非掺杂直状金属型单层碳纳米管（ＳＷＮＴｓ）的电导特性进行理论研究，计算表明；ＳＷＮＴｓ的电导是量子化的．
According to the basic concepts of mesoscopic physics, semiclassical electron transport theory and the electronic structure of carbon nanotubes, the conductivity of undoped straight-metal single-walled carbon nanotubes (SWNTs) has been studied theoretically. The results show that SWNTs The conductance is quantized.