Journal
SMALL
Volume 6, Issue 9, Pages 1038-1043Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.200902350
Keywords
electrochemical deposition; feature dependence; metal-enhanced fluorescence; nanoparticle arrays; surface plasmon resonance
Categories
Funding
- National Natural Science Foundation of China [20773052, 20373019]
- Program for New Century Excellent Talents in University
- EU [FP7-CP-IP 214249]
- EC [FP6/2003/IST/2-511616]
- Science Foundation Ireland [02/IN.1/172]
- NTU
- National Research Foundation of Singapore [NRF-RF2009-04]
- National Basic Research Program [2007CB808003, 2009CB939701]
- ICREA Funding Source: Custom
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It is demonstrated that silver nanoparticle (SNP) arrays fabricated by combining nanoimprint lithography and electrochemical deposition methods can be used as substrates for metal-enhanced fluorescence, which is widely used in optics, sensitive detection, and bioimaging. The method presented here is simple and efficient at controlling the nanoparticle density and interparticle distance within one array. Furthermore, it is found that the fluorescence intensity can be tuned by engineering the feature size of the SNP arrays. This is due to the different coupling efficiency between the emission of the fluorophores and surface plasmon resonance band of the metallic nanostructures.
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