Share Email Print

Proceedings Paper

Theoretical comparison of sensitivity enhancement of various metals based nearly guided wave surface plasmon resonance biosensors designed by genetic algorithm
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

In this paper, the comparative study of sensitivity of NGWSPR biosensor with Au, Ag, Cu and Al is presented. To achieve high sensitivity, the thickness of each layer in the proposed biosensor is optimized using genetic algorithm (GA). A constraint condition of reflectivity at resonance angle is used in the merit function (MF) of GA to realize large depth of dip. Using this method, NGWSPR biosensors with Au, Ag, Cu and Al are designed and analyzed. The sensitivity of designed Ag based NGWSPR biosensor is up to 289 °/RIU when using TiO2 as the dielectric, which is 31.83%, 24.91% or 61.94% higher than the sensitivity of designed Au, Cu or Al based one. We believe our work is important because it compares the largest sensitivities of NGWSPR biosensors with different metals, and be helpful for highly sensitive biosensors development.

Paper Details

Date Published: 18 December 2019
PDF: 8 pages
Proc. SPIE 11336, AOPC 2019: Nanophotonics, 1133605 (18 December 2019); doi: 10.1117/12.2540607
Show Author Affiliations
Zhining Lin, Beijing Univ. of Chemical Technology (China)
Shujing Chen, China Univ. of Geosciences (China)
Chengyou Lin, Beijing Univ. of Chemical Technology (China)

Published in SPIE Proceedings Vol. 11336:
AOPC 2019: Nanophotonics
Zhiping Zhou; Xiao-Cong Yuan; Daoxin Dai, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?