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Proceedings Paper

Surface-enhanced Raman scattering from uniform large-area gold and silver nanoparticle cluster array substrates
Author(s): Chen-Han Huang; Hsing-Ying Lin
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Paper Abstract

We report the synthesis of gold and silver nanostructures inside large-area polydimethylsiloxane (PDMS) nanohole arrays for use as substrates in surface-enhanced Raman scattering (SERS) in view of its good biocompatibility and high potential as building blocks for construction of complex devices. Gold and silver nanoparticles inside periodical polydimethylsiloxane (PDMS) nanohole arrays are prepared via simple nano-imprint lithography and chemical immobilization. Such metal nanoparticles within PDMS nanoholes show a strong and reproducible surface-enhanced Raman scattering (SERS) effect, which enables the detection of Rhodamine 6G molecules at 10-9 and 10-10 M on AuNPs and AgNPs substrates, respectively. The SERS activity of substrates depends on spatial distributions of well-controlled hot spots via plasmonic coupling of closely spaced metal particles. The proposed nano-imprint lithography combined with chemical immobilization of metal nanoparticles appears to be a viable approach for preparing low-cost, efficient, reliable, and reproducible SERS substrates for sensitive Raman detections.

Paper Details

Date Published:
PDF: 7 pages
Proc. SPIE 7911, Plasmonics in Biology and Medicine VIII, 79111G; doi: 10.1117/12.876080
Show Author Affiliations
Chen-Han Huang, National Cheng Kung Univ. (Taiwan)
Hsing-Ying Lin, National Cheng Kung Univ. (Taiwan)

Published in SPIE Proceedings Vol. 7911:
Plasmonics in Biology and Medicine VIII
Tuan Vo-Dinh; Joseph R. Lakowicz, Editor(s)

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