  Recently, we showed that dielectric mesoscale spheres could support so-called
super-resonance effect, i.e. high-order Mie resonance modes with giant field
localization and enhancement. Due to the presence of the surrounding medium
leads to a significant influence in the intensity of the field in the particle,
based on Mie theory we show for the first time that this effect may be use to
design refractive index sensor of medium. Using the example of air as an
environment, we have shown that the sensitivity of the proposed sensor concept
can reach from 10-6 to 10-8, depending on the accuracy of the sphere size
parameter, which is no worse than the accuracy of modern interference methods.
