In this paper, thin films of mixed conducting glasses from the V2O3-B2
O3 system to be used as electrodes in microbatteries were first invest
igated. Ionically conducting glasses were then studied for use in mult
ilayer sensing systems (microsensors). Na2O-Al2O3-SiO2 glasses were ch
osen as the Na+ sensitive membrane while the NaI-Ag2O-B2O3-P2O5 glasse
s were used as ionic bridges placed in between the sensitive thin film
and the collector and were corresponding to a ''pseudo internal refer
ence''.