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Proceedings Paper

SERS properties of gold core silver shell nanoparticles self-assembled on silica substrates and optical fiber endface
Author(s): Qianqian Geng; Zhenyi Chen; Na Chen; Shupeng Liu; Chen Qian; Tingyun Wang
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Paper Abstract

Gold core silver shell nanoparticles with different molar ratios of gold and silver were prepared by chemical reduction with microwave heating method. Uv-vis absorption spectrometer and transmission electron microscope (TEM) were used to detect their absorption and surface topography. The results show that core-shell nanoparticles had controllable size and uniform distribution. With Rhodamine 6G (R6G) as detection molecules, gold core silver shell sol with a molar ratio of 1:10 had the best surface-enhanced Raman scattering (SERS) effect. And we detected 10-17 mol/l and 10-9mol/l R6G solution respectively after they were self-assembled on silica substrates and optical fiber endface.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84216N (7 November 2012); doi: 10.1117/12.975645
Show Author Affiliations
Qianqian Geng, Shanghai Univ. (China)
Zhenyi Chen, Shanghai Univ. (China)
Na Chen, Shanghai Univ. (China)
Shupeng Liu, Shanghai Univ. (China)
Chen Qian, Shanghai Univ. (China)
Tingyun Wang, Shanghai Univ. (China)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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