Research on the glucose-sensing characteristics of gold microparticle-doped silica microfiber based on refractive index measurement

摘要

A gold microparticle-doped silica microfiber was proposed in this paper. The refractive index sensing properties were experimentally and calculatedly demonstrated by transmission spectra using glucose solution with different concentrations, where the redshift of resonance peaks has been analyzed for the concentrations range from 0 to 0.282 mol/L. The experimental results indicate the detection limit of 53.2 mu mol/L. The sensing characteristics of pure silica microfiber were experimentally and calculatedly explored to demonstrate the impact of the gold particles introduction on the sensitivity enhancement. The miniature geometry will prompt the development of the novel wearable or implantable glucose sensor.