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Microplasma-based synthesis of vertically aligned metal oxide nanostructures.
MedLine Citation:
PMID:  23037639     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Vertically aligned metal oxide nanostructures (e.g., wires, needles, pillars and trees) of CuO, PdO and NiO were synthesized on several substrates (e.g., Si and ITO (indium tin oxide)) using a high-pressure (∼Torr) microplasma-based growth technique. Organometallic precursors were dissociated in the hollow cathode region of a supersonic plasma jet creating a directed flux of metal species (e.g., atoms, metastables, etc) which react with an oxygen background to form crystalline metal oxide films having a variety of nanomorphologies. Spiral-like growth fronts were seen in some cases for CuO, suggesting that nanowire growth may involve screw dislocations. Large area, nanowire films >1 cm(2) with good adhesion and electrical connection to ITO substrates were deposited by raster-scanning a single jet. Details of the microplasma operation, the dynamics of the growth process and the resulting materials are discussed.
Authors:
Travis L Koh; Evan C O'Hara; Michael J Gordon
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Publication Detail:
Type:  Journal Article     Date:  2012-10-04
Journal Detail:
Title:  Nanotechnology     Volume:  23     ISSN:  1361-6528     ISO Abbreviation:  Nanotechnology     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-05     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101241272     Medline TA:  Nanotechnology     Country:  England    
Other Details:
Languages:  eng     Pagination:  425603     Citation Subset:  IM    
Affiliation:
Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA 93106-5080, USA.
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