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Effective Supergrowth of Vertical Aligned Carbon Nanotubes at Low Temperature and Pressure

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We present the generalised supergrowth of single and double walled carbon nanotubes like “water assisted supergrowth” at low temperature (630 °C) and pressure (1 Torr) by chemical vapour deposition using various thicknesses of iron supported alumina substrate as a catalyst. Reduced temperature and low pressure synthesis of single walled (SW) and double walled (DW) carbon nanotubes is of interest for their efficient growth into device architectures. Pure SW with 2.5 nm diameter are obtained with 0.37 nm Fe catalyst at 630 °C. We demonstrated the decrease of the density versus temperatures and also obtained high density materials (1.4×1012 cm−2) at low temperature (580 °C). Scanning and transmission electron microscope studies provided information on the height, density of the carpets and the structure and diameter of SW and DW carbon nanotubes, respectively.
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Document Type: Research Article

Publication date: 01 March 2014

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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