Document Detail


Pattern-selective epitaxial growth of twin-free Pd nanowires from supported nanocrystal seeds.
MedLine Citation:
PMID:  20455529     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
We report that twin-free single-crystalline Pd nanowire (NW) arrays grow epitaxially in a selected pattern on a substrate. Parallel aligned Pd NWs are synthesized on a SrTiO(3) (110) substrate in a very high density. On a SrTiO(3) (001) substrate, Pd NWs grow horizontally in two perpendicular directions. Vertical Pd NWs are synthesized instead of horizontal NWs when a c-cut sapphire substrate is employed. We reveal that the atomic structure of the substrate surface determines the geometry and orientation of seeds, which in turn direct the growth patterns of the NWs. The interface energy between the NW material and the substrate is also critical in determining the NW growth pattern. Polarization-dependent localized surface plasmon resonance of as-synthesized epitaxial Pd NW arrays is investigated for application as a plasmonic platform.
Authors:
Youngdong Yoo; Ilsun Yoon; Hyoban Lee; Jihee Ahn; Jae-Pyoung Ahn; Bongsoo Kim
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  ACS nano     Volume:  4     ISSN:  1936-086X     ISO Abbreviation:  ACS Nano     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-25     Completed Date:  2010-09-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101313589     Medline TA:  ACS Nano     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2919-27     Citation Subset:  -    
Affiliation:
Department of Chemistry, KAIST, Daejeon 305-701, Korea.
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