Directed branch growth in aligned nanowire arrays

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DOIResolve DOI: http://doi.org/10.1021/nl404377v
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TypeArticle
Journal titleNano Letters
ISSN1530-6992
Volume14
Issue4
Pages17971803; # of pages: 7
SubjectBranched nanowires; Glancing Angle Deposition; Indium tin oxide; Nanotrees; Vapor-liquid-solid; Epitaxy
AbstractBranch growth is directed along two, three, or four in-plane directions in vertically aligned nanowire arrays using vapor-liquid-solid glancing angle deposition (VLS-GLAD) flux engineering. In this work, a dynamically controlled collimated vapor flux guides branch placement during the self-catalyzed epitaxial growth of branched indium tin oxide nanowire arrays. The flux is positioned to grow branches on select nanowire facets, enabling fabrication of aligned nanotree arrays with L-, T-, or X-branching. In addition, a flux motion algorithm is designed to selectively elongate branches along one in-plane axis. Nanotrees are found to be aligned across large areas by X-ray diffraction pole figure analysis and through branch length and orientation measurements collected over 140 μm2 from scanning electron microscopy images for each array. The pathway to guided assembly of nanowire architectures with controlled interconnectivity in three-dimensions using VLS-GLAD is discussed. © 2014 American Chemical Society.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Security and Disruptive Technologies; National Institute for Nanotechnology
Peer reviewedYes
NPARC number21272304
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Record identifier8a0020da-25d7-41d5-b865-8ceb06ffd9cb
Record created2014-07-24
Record modified2016-05-09
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