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A fiber optic SPR (FOSPR) based probe with coatings of silver and nanocomposite of CNT/Cu-nanoparticles over unclad core of the fiber is proposed for the sensing of nitrate. The sensing is based on the reduction of nitrate on interaction with copper nanoparticles and the formation of ammonium ions. The adsorption of ammonium ions on CNTs changes the dielectric properties of CNT/Cu-NPs nanocomposite...
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