Abstract:
Amorphous chalcogenide As2S3 films used in surface plasmon resonance structures
improves the sensitivity of sensors using such structures by providing them with sharp resonance
characteristics: changes at the sixth decimal of the ambient medium refractive index cause
important changes of the reflectivity. This high sensitivity is fructified to determine the salinity of
the water. The salinity of the water changes the refractive index of the water under test and these
changes are put in evidence by the plasmon resonance.