Effect of catalyst film thickness on carbon nanotube growth by selective area chemical vapor deposition

By Yayi Wei, G. Eres, V. Merkulov, D. Lowndes. 2001

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Mass production of high-quality multi-walled carbon nanotube bundles on a Ni/Mo/MgO catalyst (2005, background): “) or CO as feedstock and Fe, Ni, or Co as catalysts [5–14].”
Development of Carbon Nanotube-Based Sensors—A Review (2007, background): “For this technique, there is a critical film thickness beyond which no tubes will grow, a thickness which increases with substrate temperature [31].”
A Critical Review of Glucose Biosensors Based on Carbon Nanomaterials: Carbon Nanotubes and Graphene (2012, methodology): “In some applications, well aligned carbon nanotubes on substrates are desired for this thermal CVD which is uniquely superior to the other methods described above [49–51].”
Carbon nanotube growth mechanism switches from tip- to base-growth with decreasing catalyst particle size (2008, background): “When a barrier layer such as silicon oxide or titanium nitride is interlaid, the interaction between the substrate and the catalyst is weakened and tip-growth is commonly observed, especially in PE-CCVD [16–18].”