GIST Scholar
College of Engineering
Department of Mechanical and Robotics Engineering
1. Journal Articles
The rapid growth of vertically aligned carbon nanotubes using laser heating
- Type
- Article
- Citation
- NANOTECHNOLOGY, v.20, no.18
- Issued Date
- 2009-05
- Abstract
- Growth of densely packed vertically aligned carbon nanotubes (VA-CNTs) using laser-induced chemical vapor deposition with visible laser (lambda = 532 nm) irradiation at room temperature is reported. Using a multiple-catalyst layer (Fe/Al/Cr) on quartz as the substrate and an acetylene-hydrogen mixture as the precursor gas, VA-CNT pillars with 60 mu m height and 4 mu m diameter were grown at a high rate of around 1 mu m s(-1) with good reproducibility. It is demonstrated that the fabrication of uniform pillar arrays of VA-CNTs can be achieved with a single irradiation for each pillar using LCVD with no annealing or preprocessing of the substrate. Here, laser fast heating is considered the primary mechanism facilitating the growth of VA-CNT pillars. Field emission characteristics of an array of VA-CNT pillars were then examined to investigate their potential application in vacuum electronic devices.
- Publisher
- IOP PUBLISHING LTD
- ISSN
- 0957-4484
- Appears in Collections:
- Research Institutes > 1. Journal Articles
Department of Mechanical and Robotics Engineering > 1. Journal Articles
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