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Carbon nanotube synthesis from germanium nanoparticles on patterned substrates

Capasso, A; Waclawik, E; Bell, John Marcus; Ruffell, Simon; Sgarlata, A; Scarselli, M; De Crescenzi, M; Motta, N

Description

Controlled synthesis of carbon nanotubes (CNTs) is highly desirable for nanoelectronic applications. To date, metallic catalyst particles have been deemed unavoidable for the nucleation and growth of any kind of CNTs. Ordered arrays of nanotubes have been obtained by controlled deposition of the metallic catalyst particles. However, the presence of metal species mixed with the CNTs represents a shortcoming for most electronic applications, as metal particles are incompatible with silicon...[Show more]

dc.contributor.authorCapasso, A
dc.contributor.authorWaclawik, E
dc.contributor.authorBell, John Marcus
dc.contributor.authorRuffell, Simon
dc.contributor.authorSgarlata, A
dc.contributor.authorScarselli, M
dc.contributor.authorDe Crescenzi, M
dc.contributor.authorMotta, N
dc.date.accessioned2015-12-07T22:17:03Z
dc.identifier.issn0022-3093
dc.identifier.urihttp://hdl.handle.net/1885/18357
dc.description.abstractControlled synthesis of carbon nanotubes (CNTs) is highly desirable for nanoelectronic applications. To date, metallic catalyst particles have been deemed unavoidable for the nucleation and growth of any kind of CNTs. Ordered arrays of nanotubes have been obtained by controlled deposition of the metallic catalyst particles. However, the presence of metal species mixed with the CNTs represents a shortcoming for most electronic applications, as metal particles are incompatible with silicon semiconductor technology. In the present paper we report on a metal-catalyst-free synthesis of CNTs, obtained through Ge nanoparticles on a Si(001) surface patterned by nanoindentation. By using acetylene as the carbon feed gas in a low-pressure Chemical Vapor Deposition (CVD) system, multi-walled carbon nanotubes (MWNT) have been observed to arise from the smallest Ge islands. The CNTs and the Ge three-dimensional structures have been analysed by SEM, EDX and AFM in order to assess their elemental features and properties. EDX and SEM results allow confirmation of the absence of any metallic contamination on the surface, indicating that the origin of the CNT growth is due to the Ge nanocrystals.
dc.publisherElsevier
dc.sourceJournal of Non-crystalline Solids
dc.subjectKeywords: AFM; Carbon nanotube synthesis; Catalyst-free synthesis; Controlled deposition; Controlled synthesis; Electronic application; Feed gas; Ge island; Ge nanocrystals; Ge Nanoparticles; Metal particle; Metal species; Metallic catalysts; Metallic contamination Carbon nanotubes; Germanium nanoparticles
dc.titleCarbon nanotube synthesis from germanium nanoparticles on patterned substrates
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume356
dc.date.issued2010
local.identifier.absfor020499 - Condensed Matter Physics not elsewhere classified
local.identifier.absfor100706 - Nanofabrication, Growth and Self Assembly
local.identifier.ariespublicationu4241699xPUB4
local.type.statusPublished Version
local.contributor.affiliationCapasso, A, Queensland University of Technology
local.contributor.affiliationWaclawik, E, Queensland University of Technology
local.contributor.affiliationBell, John Marcus, Queensland University of Technology
local.contributor.affiliationRuffell, Simon, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationSgarlata, A, University of Rome Tor Vergata
local.contributor.affiliationScarselli, M, University of Rome Tor Vergata
local.contributor.affiliationDe Crescenzi, M, University of Rome Tor Vergata
local.contributor.affiliationMotta, N, Queensland University of Technology
local.description.embargo2037-12-31
local.bibliographicCitation.startpage1972
local.bibliographicCitation.lastpage1975
local.identifier.doi10.1016/j.jnoncrysol.2010.05.041
dc.date.updated2016-02-24T10:47:28Z
local.identifier.scopusID2-s2.0-84755160994
local.identifier.thomsonID000282929000021
CollectionsANU Research Publications

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