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Ko, Hyunhyub
Functional Nanomaterials & Devices Lab
Research Interests
  • Functional nanomaterials, flexible electronics, electronic skins, wearable sensors

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Nanoparticle-Decorated Nanocanals for Surface-Enhanced Raman Scattering

Cited 103 times inthomson ciCited 100 times inthomson ci
Title
Nanoparticle-Decorated Nanocanals for Surface-Enhanced Raman Scattering
Author
Ko, HyunhyubTsukruk, Vladimir V.
Keywords
Gold; Nanoparticles; Nanoporous materials; SERS
Issue Date
2008-11
Publisher
WILEY-V C H VERLAG GMBH
Citation
SMALL, v.4, no.11, pp.1980 - 1984
Abstract
Nanocanal arrays composed of uniformly aligned vertical cylindrical pores with inner walls decorated with gold nanoparticles as robust and cost-efficient surface enhanced Raman scattering (SERS) substrates with significant SERS enhancement were introduced. A representative cross-sectional microscopic image of decorated nanocanals within porous alumina membranes show that most of the gold nanoparticles are immobilized in an isolated state with occasional aggregated clusters. The scanning electron microscopic (SEM) analysis images show that very few nanoparticle aggregates, which could not contain hot spots, are present in substrates. The SERS enhancement of 2D substrate with relatively low concentration and very few aggregates of gold nanoparticles is found to be 10, owing to a rare presence of hot spots.
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DOI
10.1002/smll.200800301
ISSN
1613-6810
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ECHE_Journal Papers
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