ESA-based in-fiber nanocavity for hydrogen-peroxide detection |
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| Authors: | Del Villar I. Matias I.R. Arregui F.J. Claus R.O. |
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| Affiliation: | Electr. & Electron. Eng. Dept., Public Univ. of Navarra, Pamplona, Spain; |
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| Abstract: | A fiber-optic sensor sensitive to hydrogen peroxide has been designed based on the electrostatic layer-by-layer self-assembly method. Prussian blue has been deposited in a polymeric structure formed by Poly(allylamine hydrochloride) and poly(acrylic acid). The concentration that can be detected range between 10/sup -6/-10/sup -3/ M, and recovery of the sensor after immersion into a reductive agent was demonstrated. The response of the sensor is independent of the pH for values that range between 4-7.4. Some rules for estimation of the refractive index of the material deposited and the thickness of the bilayers are also presented. |
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