Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10668051 | Surface and Coatings Technology | 2014 | 7 Pages |
Abstract
Vertically protruding arrays of carbon nanotubes were obtained using a cobalt catalyst irradiated with MeV-energy protons. Voids were generated inside the penetrated and dislocated channels by the intercalation of protons and by blister of reduced hydrogen inside the catalyst generated pores, swelling, and agglomerated clusters. These effects are associated with the higher active reaction between gases and catalyst for longer, thicker, and more differentiated growth of carbon nanotubes. The geometry of the carbon-nanotube arrays becomes rugged, oval, or cylindrical depending on the irradiation fluence. Clearly, the treatment of the catalyst by proton irradiation directly controls the patterns and geometry of the vertical carbon-nanotube array.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Dae Weon Kim, Dong Chul Shin, Dong Kyun Seo, Tae Woo Kim, Jong Pil Kim, Byung Young Moon,