共 45 条
Deterministic nanoparticle assemblies: from substrate to solution
被引:10
作者:

Barcelo, Steven J.
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h-index: 0
机构:
Hewlett Packard Labs, Palo Alto, CA 94043 USA Hewlett Packard Labs, Palo Alto, CA 94043 USA

Kim, Ansoon
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h-index: 0
机构:
Korea Res Inst Stand & Sci, Taejon, South Korea Hewlett Packard Labs, Palo Alto, CA 94043 USA

Gibson, Gary A.
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h-index: 0
机构:
Hewlett Packard Labs, Palo Alto, CA 94043 USA Hewlett Packard Labs, Palo Alto, CA 94043 USA

Norris, Kate J.
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Calif Santa Cruz, Baskin Sch Engn, Santa Cruz, CA 95064 USA
NASA, Ames Res Ctr, Moffett Field, CA 94035 USA Hewlett Packard Labs, Palo Alto, CA 94043 USA

Yamakawa, Mineo
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h-index: 0
机构:
Hewlett Packard Labs, Palo Alto, CA 94043 USA Hewlett Packard Labs, Palo Alto, CA 94043 USA

Li, Zhiyong
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h-index: 0
机构:
Hewlett Packard Labs, Palo Alto, CA 94043 USA Hewlett Packard Labs, Palo Alto, CA 94043 USA
机构:
[1] Hewlett Packard Labs, Palo Alto, CA 94043 USA
[2] Korea Res Inst Stand & Sci, Taejon, South Korea
[3] Univ Calif Santa Cruz, Baskin Sch Engn, Santa Cruz, CA 95064 USA
[4] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA
关键词:
nanoparticle;
self-assembly;
plasmonics;
SERS;
chemical sensing;
ENHANCED RAMAN-SCATTERING;
GOLD;
SURFACE;
SILVER;
ARRAYS;
DIMERS;
D O I:
10.1088/0957-4484/25/15/155302
中图分类号:
TB3 [工程材料学];
学科分类号:
0805 ;
080502 ;
摘要:
The deterministic assembly of metallic nanoparticles is an exciting field with many potential benefits. Many promising techniques have been developed, but challenges remain, particularly for the assembly of larger nanoparticles which often have more interesting plasmonic properties. Here we present a scalable process combining the strengths of top down and bottom up fabrication to generate deterministic 2D assemblies of metallic nanoparticles and demonstrate their stable transfer to solution. Scanning electron and high-resolution transmission electron microscopy studies of these assemblies suggested the formation of nanobridges between touching nanoparticles that hold them together so as to maintain the integrity of the assembly throughout the transfer process. The application of these nanoparticle assemblies as solution-based surface-enhanced Raman scattering (SERS) materials is demonstrated by trapping analyte molecules in the nanoparticle gaps during assembly, yielding uniformly high enhancement factors at all stages of the fabrication process.
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