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Proceedings Paper

Optical interaction between silver nanocubes and two dimensional silver gratings studied by surface enhanced Raman scattering
Author(s): Qiang Fu; Douguo Zhang; Yikai Chen; Pei Wang; Hai Ming
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Paper Abstract

In this article, two dimensional (2D) metallic gratings of different period and silver nanocubes are fabricated and used as the SERS substrate. The SERS signals of rhodamine6G (R6G) on different substrates are compared. Experimental results show that the SERS signals is much weaker if the R6G molecules are placed on the bare silver film, but the signals will be greatly enhanced if the substrates are composed of both the silver nanocubes and metallic gratings. We attribute this enhancement to the coupling between localized surface plasmons and propagating surface plasmons. Further, we study SERS signals from different parts of the 500nm and 1000nm period 2D metal gratings including the silver nanocubes. The grating of smaller period shows more reproducibility, which arises from the uniformity in the incident laser coverage.

Paper Details

Date Published: 27 November 2012
PDF: 8 pages
Proc. SPIE 8555, Optoelectronic Devices and Integration IV, 855502 (27 November 2012); doi: 10.1117/12.999882
Show Author Affiliations
Qiang Fu, Univ. of Science and Technology of China (China)
Douguo Zhang, Univ. of Science and Technology of China (China)
Yikai Chen, Univ. of Science and Technology of China (China)
Pei Wang, Univ. of Science and Technology of China (China)
Hai Ming, Univ. of Science and Technology of China (China)

Published in SPIE Proceedings Vol. 8555:
Optoelectronic Devices and Integration IV
Xuping Zhang; Hai Ming; Joel M. Therrien, Editor(s)

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