Title :
Towards controlled growth of carbon nanotubes from germanium on nanoindented silicon substrates
Author :
Capasso, Andrea ; Waclawik, Eric ; Bell, John M. ; Ruffell, Simon ; Sgarlata, Anna ; Scarselli, Manuela ; De Crescenzi, Maurizio ; Motta, Nunzio
Author_Institution :
Sch. of Eng. Syst., Queensland Univ. of Technol., Brisbane, QLD, Australia
Abstract :
In the present paper, we report on a metal-catalyst-free synthesis of carbon nanotubes (CNTs) on a pre-patterned Si(001) surface. Arrays of triangular-shaped holes were created by nanoindentation in specific sites of the sample. After germanium deposition and chemical vapor deposition (CVD) of acetylene, a few CNTs nucleated and grew from germanium nanoparticles. This result illustrate how it is possible to control the growth of CNTs without the use of a metal catalyst, by leading the assembly of Ge nanoparticles with a patterning technique.
Keywords :
carbon nanotubes; catalysts; chemical vapour deposition; germanium; nanofabrication; nanoindentation; nanoparticles; nanopatterning; nucleation; C; CVD; Si; acetylene; carbon nanotubes; chemical vapor deposition; germanium nanoparticle deposition; metal-catalyst-free synthesis; nanoindented silicon substrates; nanopatterning; nucleation; prepatterned Si(001) surface; triangular-shaped hole arrays; Carbon nanotubes; Germanium; Nanoparticles; Scanning electron microscopy; Silicon; Substrates; carbon nanotube; germanium; nanoindentation; patterning;
Conference_Titel :
Nanoscience and Nanotechnology (ICONN), 2010 International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-5261-3
Electronic_ISBN :
978-1-4244-5262-0
DOI :
10.1109/ICONN.2010.6045242
