Carbon nanotube growth activated by quantum-confined silicon nanocrystals

D Mariotti, V Svrcek, A Mathur, C Dickinson, K Matsubara, M Kondo

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8 Citations (Scopus)
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Abstract

We report on the use of silicon nanocrystals (Si-ncs) to activate nucleation and growth of carbon nanotubes (CNTs) without using any metal catalyst. Si-ncs with different surface characteristics have been exposed to the same CH 4 low-pressure plasma treatment producing quite different results. Specifically, Si-ncs prepared by laser ablation in water have contributed to the formation of micrometre-sized silicon spherical particles. On the other hand, Si-ncs prepared by electrochemical etching did not induce any specific growth while the third type of Si-ncs, prepared by electrochemical etching and treated by a laser fragmentation process, induced the growth of multi-walled CNTs. The different outcomes of the same plasma process are attributed to the diverse surface features presented by the Si-ncs.
Original languageEnglish
Pages (from-to)122001
JournalJournal of Physics D: Applied Physics
Volume46
Issue number12
Publication statusPublished - 2013

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