Morphology control of rapid grown vertically aligned carbon nanotube forest for fiber spinning

Morphology control of rapid grown vertically aligned carbon nanotube forest for fiber spinning is reported. Thermal chemical vapor deposition (CVD) system at around 700°C was used with a catalyst of iron catalyst films deposited on thin alumina supporting layers. Acetylene gas diluted with hydrogen and nitrogen was used as a carbon source. The morphology of carbon nanotube was observed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM).