Document Detail


Fabrication of zinc oxide nanostructures using solvent-assisted capillary lithography.
MedLine Citation:
PMID:  21727516     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
We present a simple solvent-assisted capillary molding method to fabricate zinc oxide (ZnO) nanostructures using an ultraviolet (UV) curable polyurethane acrylate (PUA) mold. A thin film of the ZnO sol-gel precursor solution in methyl alcohol was prepared by spin coating on a solid substrate and subsequently a nanopatterned PUA mold was brought into conformal contact with the substrate under slight physical pressure (∼3.5 bar). After annealing at 230 °C for 4 h, well-defined ZnO nanostructures formed with feature size down to ∼50 nm, aided by capillary rise and solvent evaporation. It was found that the height of capillary rise depended highly on the applied pressure. A simple experimental setup was devised to examine the effects of pressure, revealing that the optimum pressure ranged from 3.5 bar to 5 bar. Also, ZnO nanorods could be selectively grown on patterned regions using the seed layer as a pseudocatalyst when the width of the seed layer was larger than ∼200 nm.
Authors:
J W Park; J K Kim; K Y Suh
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Publication Detail:
Type:  Journal Article     Date:  2006-04-28
Journal Detail:
Title:  Nanotechnology     Volume:  17     ISSN:  0957-4484     ISO Abbreviation:  Nanotechnology     Publication Date:  2006 May 
Date Detail:
Created Date:  2011-07-05     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101241272     Medline TA:  Nanotechnology     Country:  England    
Other Details:
Languages:  eng     Pagination:  2631-5     Citation Subset:  -    
Affiliation:
School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea.
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