Synthesis of carbon nanotubes by rolling up patterned graphene nanoribbons using selective atomic adsorption.
Synthesis of carbon nanotubes by rolling up patterned graphene nanoribbons using selective atomic adsorption.
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DOI：
10.1021/nl071511n
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发表时间：
2007-09
期刊：
影响因子：
10.8
通讯作者：
Decai Yu;Feng Liu
中科院分区：
文献类型：
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作者：
Decai Yu;Feng Liu
我们利用第一性原理和经典的分子动力学模拟，展示了一种新的合成碳纳米管的方法(美国专利申请，序列号60/908039)。单壁纳米管(SWNTs)是由石墨薄膜上的石墨烯纳米带通过吸附不同覆盖度的原子而折叠而成的，这引入了一个外部应力来驱动折叠过程。碳纳米管的直径和手性可以通过图案化具有预定宽度和方向的石墨烯纳米带来先验地控制，从而省去了合成后的分选过程。我们的方法允许潜在地大规模生产相同的管并容易地集成到基板上的器件结构中。
We demonstrate a new method (U.S. Patent Appl., serial no. 60/908039) for synthesizing carbon nanotubes (CNTs), using first-principles and classical molecular dynamics simulations. The single-walled nanotubes (SWNTs) are formed by folding graphene nanoribbons patterned on graphite films through adsorption of atoms of varying coverage, which introduces an external stress to drive the folding process. The diameter and chirality of SWNTs can be a priori controlled by patterning graphene nanoribbons with predefined width and direction so that the postsynthesis sorting process is eliminated. Our method allows potentially mass production of identical tubes and easy integration into device structures on a substrate.