Increased CNT growth density with an additional thin Ni layer on the Fe/Al catalyst film |
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| Affiliation: | 1. Department of Electronic and Photonic Systems Engineering, Kochi University of Technology, 185 Miyanokuchi, Tosayamada-cho, Kami, Kochi 782-8502, Japan;2. Institute for Nanotechnology, Kochi University of Technology, 185 Miyanokuchi, Tosayamada-cho, Kami, Kochi 782-8502, Japan;1. KACST-Intel Consortium Center of Excellence in Nano-Manufacturing Applications (CENA), Riyadh, Saudi Arabia;2. Department of Physics, Taiz University, Taiz, Yemen;3. Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;4. Laser Diagnosis of Cancers, College of Science, King Saud University, Riyadh 11451, Saudi Arabia;1. Department of Physics and Astronomy, Uppsala University, Box 516, S-751 20 Uppsala, Sweden;2. National Center for Electron Microscopy in Beijing, Key Laboratory of Advanced Materials (MOE) and The State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;3. Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, D-52425?Jülich, Germany |
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| Abstract: | Density of 3 × 1011/cm2 and diameter of CNTs of 9–12 nm were successfully controlled by using the multi-layered catalyst film consisting of an additional Ni layer on Fe/Al catalyst film. EDS analysis for the annealed catalyst films revealed that the increase of the density of Fe catalyst particles corresponded with the decrease of Ni in the films, which strongly suggested that the additional thin Ni layer on the Fe/Al multi-layered catalyst films prevented the fine Fe catalyst particles from agglomeration, resulting in the growth of high-density, and uniform diameter of CNTs. |
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