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碳纳米管可以具有金属性或半导体性,这依赖于它们的手性.IBM公司有选择性地除去了多壁碳纳米管的管壁,将多壁碳纳米管转变为具有金属性或半导体性的导体.他们是将碳纳米管置于空气中,并将其两端施加恒定的偏压实现的.这里报道一种方法,即在真空中碳纳米管两端通过反复施加扫描偏压,原位除去单根多壁碳纳米管的管壁.碳纳米管最外层与电极的直接接触及其热导率的高度各向异性促进了管壁的一一除去.
Carbon nanotubes can be metallic or semiconducting, depending on their chirality. IBM selectively removes the walls of the multiwalled carbon nanotubes, transforms the multiwalled carbon nanotubes into metallic or semiconducting . They are carbon nanotubes placed in the air, and both ends of the applied constant bias achieved. Here a method is reported that both ends of the carbon nanotubes in a vacuum by repeatedly applying a scan bias, the original The single-walled carbon nanotubes were removed from the tube wall.The direct contact of the outermost carbon nanotubes with the electrode and the high anisotropy of their thermal conductivity promoted the removal of the tube wall.