Fabrication and characterization of vertically aligned carbon nanotubes on silicon substrates using porous alumina nanotemplates.
An ethylene-air laminar diffusion flame successfully provided silicon substrates of anodic aluminum oxide (AAO) template with vertically oriented well-aligned carbon nanotubes. Field emission scanning electron microscopy (SEM) showed that open-tipped carbon nanotubes consisting of tube elements with the same length and diameter uniformly coated the template. High-resolution transmission electron microscopy (TEM) analyses revealed these nanotubes to be multiwalled carbon nanotubes, some well graphitized. It was found that cobalt catalyst particles, but not the porous aluminum templates, helped the growth of carbon nanotubes through graphitization and bonding of carbon nanotubes to the silicon substrates.
Hu
Wenchong
W
Department of Electrical and Computer Engineering, Center for Micro-Magnetic and Electronic Devices, University of Kentucky, Lexington, Kentucky, USA.
Yuan
Liming
L
Chen
Zhi
Z
Gong
Dawei
D
Saito
Kozo
K
D016880:Anisotropy; D003035:Cobalt / Q000737:chemistry; D003460:Crystallization / Q000379:methods*; D006108:Graphite / Q000737:chemistry; D006358:Hot Temperature; D008422:Materials Testing; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000302:isolation & purification; D016062:Porosity; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties
D037742:Nanotubes, Carbon; D003035:Cobalt; D006108:Graphite; D012825:Silicon