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Novel Growth Phenomena Observed in Axial InAs/GaAs Nanowire Heterostructures
Author(s) -
Paladugu Mohanchand,
Zou Jin,
Guo YaNan,
Auchterlonie Graeme J.,
Joyce Hannah J.,
Gao Qiang,
Hoe Tan H.,
Jagadish Chennupati,
Kim Yong
Publication year - 2007
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.200700222
Subject(s) - nanowire , heterojunction , materials science , transmission electron microscopy , optoelectronics , particle (ecology) , nanotechnology , condensed matter physics , physics , oceanography , geology
Gold on the move … A novel growth phenomenon of axial InAs/GaAs nanowire heterostructures catalyzed by Au particles was observed. Transmission electron microscopy has determined a sequence of events: 1) Displacement of the Au particle at the end of the nanowire due to InAs clustering, 2) further InAs growth leading to sideways movement of the Au particle, and 3) eventual downward nanowire growth due to the preservation of a Au/GaAs interface (see scheme).