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Sensors 2010, 10(12), 11390-11399; doi:10.3390/s101211390
Article

Resolution Enhancement in Surface Plasmon Resonance Sensor Based on Waveguide Coupled Mode by Combining a Bimetallic Approach

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Received: 20 August 2010; in revised form: 23 November 2010 / Accepted: 7 December 2010 / Published: 13 December 2010
(This article belongs to the Section Biosensors)
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Abstract: In this study, we present and demonstrate a new route to a great enhancement in resolution of surface plasmon resonance sensors. Basically, our approach combines a waveguide coupled plasmonic mode and a kind of Au/Ag bimetallic enhancement concept. Theoretical modeling was carried out by solving Fresnel equations for the multilayer stack of prism/Ag inner-metal layer/dielectric waveguide/Au outer-metal layer. The inner Ag layer couples incident light to a guided wave and makes more fields effectively concentrated on the outer Au surface. A substantial enhancement in resolution was experimentally verified for the model stack using a ZnS-SiO2 waveguide layer.
Keywords: waveguide coupled surface plasmon resonance; bimetallic approach; high resolution SPR sensor waveguide coupled surface plasmon resonance; bimetallic approach; high resolution SPR sensor
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Lee, K.-S.; Son, J.M.; Jeong, D.-Y.; Lee, T.S.; Kim, W.M. Resolution Enhancement in Surface Plasmon Resonance Sensor Based on Waveguide Coupled Mode by Combining a Bimetallic Approach. Sensors 2010, 10, 11390-11399.

AMA Style

Lee K-S, Son JM, Jeong D-Y, Lee TS, Kim WM. Resolution Enhancement in Surface Plasmon Resonance Sensor Based on Waveguide Coupled Mode by Combining a Bimetallic Approach. Sensors. 2010; 10(12):11390-11399.

Chicago/Turabian Style

Lee, Kyeong-Seok; Son, Ju Myeong; Jeong, Dae-Yong; Lee, Taek Sung; Kim, Won Mok. 2010. "Resolution Enhancement in Surface Plasmon Resonance Sensor Based on Waveguide Coupled Mode by Combining a Bimetallic Approach." Sensors 10, no. 12: 11390-11399.


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