Title

Controlling dissociative adsorption for effective growth of carbon nanotubes

Authors

Vijaya Kayastha, Michigan Technological University
Yoke Khin Yap, Michigan Technological UniversityFollow
Svetlana Dimovski, Drexel University
Yury Gogotsi, Drexel University

Document Type

Article

Publication Date

10-19-2004

Abstract

Dissociative adsorption has been widely simplified as part of the vapor–liquid–solid (VLS) growth model. We found that the addition of specific carrier gases can critically modify the growth rate and growth density of multiwall carbon nanotubes (MWNTs). These results were explained by dissociative adsorption of C₂H₂ molecules and a solid-core VLS growth model. Based on these integrated mechanisms, vertically aligned MWNTs were grown with an initial growth rate as high as ∼800μm∕h. This efficient growth process results at temperature and C₂H₂ partial pressures at which the decomposition and segregation rates of carbon are balanced. Appropriate use of carrier gas is one of the factors that could facilitate efficient and continuous growth of carbon nanotubes in the future.

Publisher's Statement

© 2004 American Institute of Physics. Publisher’s version of record: https://doi.org/10.1063/1.1806558

Publication Title

Applied Physics Letters

Recommended Citation

Kayastha, V., Yap, Y. K., Dimovski, S., & Gogotsi, Y. (2004). Controlling dissociative adsorption for effective growth of carbon nanotubes. Applied Physics Letters, 85(15), 3265-3267. http://doi.org/10.1063/1.1806558
Retrieved from: https://digitalcommons.mtu.edu/physics-fp/307

Version

Publisher's PDF