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Evolution of InAs branches in InAs/GaAs nanowire heterostructures

Paladugu, Mohanchand; Zou, J.; Auchterlonie, G. J.; Guo, Y. N.; Kim, Y.; Joyce, H. J.; Gao, Q.; Jagadish, C.; Tan, Hark Hoe

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Branched nanowireheterostructures of InAs∕GaAs were observed during Au-assisted growth of InAs on GaAsnanowires. The evolution of these branches has been determined through detailed electron microscopy characterization with the following sequence: (1) in the initial stage of InAsgrowth, the Au droplet is observed to slide down the side of the GaAsnanowire, (2) the downward movement of Aunanoparticle later terminates when the nanoparticle encounters InAsgrowing radially on the GaAsnanowire...[Show more]

dc.contributor.authorPaladugu, Mohanchand
dc.contributor.authorZou, J.
dc.contributor.authorAuchterlonie, G. J.
dc.contributor.authorGuo, Y. N.
dc.contributor.authorKim, Y.
dc.contributor.authorJoyce, H. J.
dc.contributor.authorGao, Q.
dc.contributor.authorJagadish, C.
dc.contributor.authorTan, Hark Hoe
dc.date.accessioned2015-10-23T03:28:41Z
dc.date.available2015-10-23T03:28:41Z
dc.identifier.issn0003-6951
dc.identifier.urihttp://hdl.handle.net/1885/16059
dc.description.abstractBranched nanowireheterostructures of InAs∕GaAs were observed during Au-assisted growth of InAs on GaAsnanowires. The evolution of these branches has been determined through detailed electron microscopy characterization with the following sequence: (1) in the initial stage of InAsgrowth, the Au droplet is observed to slide down the side of the GaAsnanowire, (2) the downward movement of Aunanoparticle later terminates when the nanoparticle encounters InAsgrowing radially on the GaAsnanowire sidewalls, and (3) with further supply of In and As vapor reactants, the Aunanoparticles assist the formation of InAs branches with a well-defined orientation relationship with GaAs∕InAs core/shell stems. We anticipate that these observations advance the understanding of the kink formation in axial nanowireheterostructures.
dc.description.sponsorshipThe Australian Research Council is acknowledged for the financial support of this project. One of the authors M.P. acknowledges the support of an International Postgraduate Research Scholarship.
dc.publisherAmerican Institute of Physics (AIP)
dc.rightshttp://www.sherpa.ac.uk/romeo/issn/0003-6951..."Publishers version/PDF may be used on author's personal website, institutional website or institutional repository" from SHERPA/RoMEO site (as at 23/10/15). Copyright 2007 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters and may be found at https://doi.org/10.1063/1.2790486
dc.sourceApplied Physics Letters
dc.subjectKeywords: Drops; Electron microscopy; Gold; Heterojunctions; Indium compounds; Nanoparticles; Downward movement; Nanoparticle encounters; Nanowire heterostructures; Nanowire sidewalls; Nanowires
dc.titleEvolution of InAs branches in InAs/GaAs nanowire heterostructures
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume91
dc.date.issued2007-09-28
local.identifier.absfor100799
local.identifier.ariespublicationU3488905xPUB2922
local.publisher.urlhttps://www.aip.org/
local.type.statusPublished Version
local.contributor.affiliationPaladugu, Mohanchand, University of Queensland, Australia
local.contributor.affiliationZou, Jin, University of Queensland, Australia
local.contributor.affiliationAuchterlonie, Graeme J , University of Queensland, Australia
local.contributor.affiliationGuo, Yanan, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National University
local.contributor.affiliationKim, Yong, Dong-A University, Korea, South
local.contributor.affiliationJoyce, Hannah J, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National University
local.contributor.affiliationGao, Qiang, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National University
local.contributor.affiliationTan, Hoe Hark, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National University
local.contributor.affiliationJagadish, Chennupati, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National University
local.bibliographicCitation.issue13
local.bibliographicCitation.startpage133115
local.bibliographicCitation.lastpage3
local.identifier.doi10.1063/1.2790486
dc.date.updated2015-12-08T03:08:22Z
local.identifier.scopusID2-s2.0-34848832577
CollectionsANU Research Publications

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