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Vapor–Solid–Solid Growth Mechanism Driven by Epitaxial Match between Solid AuZn Alloy Catalyst Particles and ZnO Nanowires at Low Temperatures
Author(s) -
Campos Leonardo C.,
Tonezzer Matteo,
Ferlauto Andre S.,
Grillo Vincenzo,
MagalhãesPaniago Rogério,
Oliveira Sergio,
Ladeira Luiz O.,
Lacerda Rodrigo G.
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200701612
Subject(s) - nanowire , materials science , epitaxy , mechanism (biology) , alloy , catalysis , nanotechnology , growth model , vapor–liquid–solid method , metallurgy , chemistry , layer (electronics) , physics , biochemistry , quantum mechanics , economics , microeconomics
A comprehensive explanation for the precise mechanism of ZnO nanowire growth at low temperatures ( T < 400 °C) is presented . Experimental data and theoretical considerations evidence that ZnO nanowires originate from solid γ‐AuZn catalyst particles. A model is proposed to describe such growth. An original feature of the model concerns the formation of nanowire, which occurs via preferential oxidation of specific γ‐AuZn surfaces induced by epitaxial‐like growth mechanism.