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Gold‐Enhanced Low‐Temperature Oxidation of Silicon Nanowires
Author(s) -
Xie Tian,
Schmidt Volker,
Pippel Eckhard,
Senz Stephan,
Gösele Ulrich
Publication year - 2008
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200700305
Subject(s) - nanowire , materials science , oxide , silicon , nanotechnology , silicon nanowires , diffusion , chemical engineering , silicon oxide , particle (ecology) , metallurgy , silicon nitride , physics , oceanography , geology , engineering , thermodynamics
Liquid gold : The oxidation of a 1D Si nanowire (SiNW; see picture: I) before heat treatment) proceeds through Si out‐diffusion promoted by the interaction of Si with an Au droplet to produce a hollow silicon oxide nanowire (II). The Au particle changes its shape to a nanocone and the excess Au is trapped by the Si oxide nanowire (III). Almost complete conversion of the SiNW into an oxide nanowire (IV) is observed.