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Proceedings Paper

Uniformly enhanced Raman scattering on arrays of silver nanoparticles separated by 5 nm gaps
Author(s): H.-H. Wang; C.-Y. Liu; Y.-C. Huang; T.-T. Liu; C.-H. Lin; J.-K. Wang; Y.-L. Wang
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Paper Abstract

Different arrays of Ag-nanoparticles grown on anodic alumina nanochannels with precisely tunable gaps (5~25 nm) are exploited for surface-enhanced Raman spectroscopy (SERS). The enhancement becomes significant for gaps below 10 nm and turns dramatically large when gaps reach an unprecedented value of 5 nm. The results are quantitatively consistent with theories based on collectively coupled surface plasmon. Such nanofabricated substrates with consistently uniform and large dynamic range have many chemical/biological sensing applications.

Paper Details

Date Published: 3 October 2006
PDF: 8 pages
Proc. SPIE 6324, Plasmonics: Nanoimaging, Nanofabrication, and their Applications II, 63240Q (3 October 2006); doi: 10.1117/12.682641
Show Author Affiliations
H.-H. Wang, National Taiwan Univ. (Taiwan)
C.-Y. Liu, Academia Sinica (Taiwan)
Y.-C. Huang, National Yang-Ming Univ. (Taiwan)
T.-T. Liu, National Yang-Ming Univ. (Taiwan)
C.-H. Lin, National Yang-Ming Univ. (Taiwan)
J.-K. Wang, Academia Sinica (Taiwan)
National Taiwan Univ. (Taiwan)
Y.-L. Wang, National Taiwan Univ. (Taiwan)
Academia Sinica (Taiwan)

Published in SPIE Proceedings Vol. 6324:
Plasmonics: Nanoimaging, Nanofabrication, and their Applications II
Satoshi Kawata; Vladimir M. Shalaev; Din Ping Tsai, Editor(s)

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