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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1021/la403067h
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|a eng
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|a Zhang, Qi
|e verfasserin
|4 aut
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|a Bimetallic platonic Janus nanocrystals
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|c 2013
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|a Text
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|a ƒaComputermedien
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|a Date Completed 06.05.2014
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|a Date Revised 15.10.2013
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a We demonstrate the creation of Ag-based bimetallic platonic Janus nanostructures by confining galvanic replacement reaction at a nanoscale interface on highly symmetrical nanostructures such as Ag nanocubes and nanooctahedra using reactive microcontact printing (μCP). The extent of galvanic replacement reaction can be controlled kinetically to derive Janus nanostructures with Au nanodots deposited on either one or multiple facets of Ag nanocubes. The selective deposition of Au dots on a single facet of Ag nanocubes breaks the cubic symmetry and brings about unique and anisotropic plasmonic responses. High-resolution cathodoluminescence hyperspectral imaging of single Janus nanocube demonstrates that surface plasmon resonances corresponding to Au and Ag can be excited at different spots on one Janus nanocube. In addition, we demonstrate the fabrication of alternating Janus/non-Janus segments on 2D Ag nanowires by using a line-patterned polydimethylsiloxane (PDMS) stamp for galvanic replacement. Aside from Au, Pt and Pd can also be selectively deposited onto Ag nanocubes. These Janus nanostructures may find important applications in the field of plasmon-enhanced catalysis
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|a Journal Article
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1 |
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|a Lee, Yih Hong
|e verfasserin
|4 aut
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1 |
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|a Phang, In Yee
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pedireddy, Srikanth
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tjiu, Weng Weei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ling, Xing Yi
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
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|g 29(2013), 41 vom: 15. Okt., Seite 12844-51
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|g volume:29
|g year:2013
|g number:41
|g day:15
|g month:10
|g pages:12844-51
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|u http://dx.doi.org/10.1021/la403067h
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