碳纳米管
化学
蛋白质丝
化学气相沉积
拉曼光谱
硅
碳纤维
化学工程
纳米技术
氢
分析化学(期刊)
复合材料
材料科学
复合数
光学
有机化学
物理
工程类
生物化学
作者
Yanchao Xu,Erica Flor,Myung Jong Kim,Behrang H. Hamadani,Howard K. Schmidt,R. E. Smalley,Robert H. Hauge
摘要
A hot filament chemical vapor deposition method has been developed to grow vertical array single-walled carbon nanotubes (SWNTs). In this study, a hot filament (temperature greater than 2000 degrees C) was used to activate gas mixtures of hydrogen and carbon containing species at sub-atmospheric pressures. Silicon substrates decorated with islands of iron were directly inserted into a preheated furnace in which a hot filament is activating the gas. Vertical arrays of SWNTs are produced with diameters ranging from 0.78 to 1.6 nm. The samples were characterized with Raman and fluorescence spectroscopy and SEM and TEM microscopy.
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