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Shaping carbon nanotubes and the effects on their electrical and mechanical properties

机译：塑造碳纳米管及其对电气和机械性能的影响

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摘要

A method is developed and shown to be able to shape a carbon nanotube (CNT) into a desired morphology while maintaining its excellent electrical and mechanical properties. Single, freestanding nanotubes are bent by a scanning tunneling microscopy probe, and their morphology is fixed by electron-beam-induced deposition (inside a transmission electron microscope) of amorphous carbon on the bent area. It is shown that the mechanical strength of the bent CNT may be greatly enhanced by increasing the amount of carbon glue or the deposition area, and the electrical conduction of the nanotube shows hardly any dependence on the bending deformation or on the deposition of amorphous carbon. Our findings suggest that CNTs might be manipulated and processed as interconnections between electronic devices without much degradation in their electrical conductance, and be used in areas requiring complex morphology, such as nanometer-scale transport carriers and nanoelectromechanical systems.
机译：开发并显示了一种方法，该方法能够将碳纳米管（CNT）成型为所需的形态，同时保持其出色的电气和机械性能。通过扫描隧道显微镜探针弯曲单个独立的纳米管，并通过电子束诱导的非晶态碳在弯曲区域上的沉积（在透射电子显微镜内部）固定其形态。已经表明，通过增加碳胶的量或沉积面积可以大大提高弯曲的CNT的机械强度，并且纳米管的导电几乎不依赖于弯曲变形或无定形碳的沉积。我们的发现表明，碳纳米管可以作为电子设备之间的互连进行处理和处理，而不会大大降低其电导率，并且可用于需要复杂形貌的领域，例如纳米级运输载体和纳米机电系统。

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