Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10676304 | Vacuum | 2005 | 6 Pages |
Abstract
Large area, well-aligned carbon nanotubes (CNTs) were synthesized on porous silicon by electron cyclotron resonance chemical vapor deposition (ECR-CVD). No bias was applied on the substrate in this experiment. CH4 and H2 were used as source gases and Fe3O4 nanoparticles as the catalyst. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction spectroscopy (XRD), and Raman spectrum were used to evaluate the structure and composition. The results show that these CNTs have varying outer diameters from 10 to 90 nm and uniform length over 10 μm. They display hollow tubular and chain structures. The possible formation mechanism of aligned CNTs is discussed.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
Zhi Wang, Dechun Ba, Fei Liu, Peijiang Cao, Tianzhong Yang, Yousong Gu, Hongjun Gao,