碳纳米管的生长机理

目前,对于碳纳米管成核及生长机理依然理解不充分,文章描述了碳纳米管在电弧蒸发法及激光蒸发法的生长过程。许多早期的模型都是假设在生长过程中有气相现象,但是有一个实验证据表明多壁碳纳米管和单壁碳纳米管两者的形成都包含有一个固态的转换。而在促进纳米管生长的过程中,升温速率好像也是一个重要的因素。

The growth mechanism of carbon nanotubes

The mechanisms by which carbon nanotubes nucleate and grow remain poorly understood.This paper reviews the models which have been proposed to explain nanotube growth in the arc-evaporation and laser-vaporisation processes.Many of the early models assumed that growth is a gas phase phenomenon but there is growing experimental evidence that the formation of both multiwalled and single-walled tubes involves a solid state transformation.Heating rate also seems to be important in promoting nanotube growth.