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中文摘要：
目前商品化生产的单壁碳纳米管（SWNTs）都是金属型和半导体型碳管的混合物，这极大的限制了它在微电子等领域的研究和应用。非共价分离方法既能保持SWNTs特有的电子结构又可实现可逆分离，是目前研究最多的分离方法。本文在在介绍SWNTs的结构与导电性能关系的基础上，概述了金属型和半导体型SWNTs的表征原理和方法，并对各种非共价分离SWNTs的方法进行了综述和比较。
英文摘要：
The coexistence of metallic and semiconducting single-walled carbon nanotubes （SWNTs） in commercial available products imposes limitations on their investigation and applications in many fields such as microelectronic devices. Non-covalent separations can preserve the pristine electronic structure and unique properties of both metallic and semiconducting SWNTs, with some of which even realize reversible separations. In this paper, the relationship between the structure and electrical properties of SWNTs is briefly introduced. We also review the characterization methods and the non-covalent separation methods of metallic and semiconducting SWNTs.
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