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Proceedings Paper

Experimental study of the optimal metal film for surface plasmon resonance
Author(s): Chan Du; Le Liu; Suihua Ma; Zhiyi Liu; Jingtao Zhu; Yonghong He; Zhanshan Wang; Jihua Guo
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Paper Abstract

Surface plasmon resonance (SPR) is an optical sensing technique which is highly sensitive to a slight change of refractive index and is widely used in physical, chemical and biological researches. However, sensitivity of the most commonly used SPR sensors which are based on Kretschmann module, seriously depends on the types and the thicknesses of the metal film in the SPR module. And there is not much experimental research on the relation between the properties of a metal film and the performance of a SPR sensor. In this paper, we prepare metal films with different types and thicknesses using magnetron sputtering method. SPR sensors based on angle interrogation and wavelength interrogation are built and used to estimate the SPR property of the metal films. Also the experimental SPR angular and spectral curves are compared with theoretical simulation results. We finally conclude with the optimal metal film type and thickness and the corresponding optimal parameters for magnetron sputtering to produce the film. These results are valuable for SPR studies.

Paper Details

Date Published: 28 October 2009
PDF: 6 pages
Proc. SPIE 7519, Eighth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2009), 75190J (28 October 2009); doi: 10.1117/12.843460
Show Author Affiliations
Chan Du, Tsinghua Univ. (China)
Le Liu, Tsinghua Univ. (China)
Suihua Ma, Tsinghua Univ. (China)
Zhiyi Liu, Tsinghua Univ. (China)
Jingtao Zhu, Tongji Univ. (China)
Yonghong He, Tsinghua Univ. (China)
Zhanshan Wang, Tongji Univ. (China)
Jihua Guo, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 7519:
Eighth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2009)
Qingming Luo; Lihong V. Wang; Valery V. Tuchin; Pengcheng Li; Ling Fu, Editor(s)

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