W. Olthuis et al., PLANAR INTERDIGITATED ELECTROLYTE-CONDUCTIVITY SENSORS ON AN INSULATING SUBSTRATE COVERED WITH TA2O5, Sensors and actuators. B, Chemical, 43(1-3), 1997, pp. 211-216
Interdigitated electrolyte-conductivity sensors with an added top laye
r of insulating Ta2O5 have been realized. The electrode-substrate stru
cture under the Ta2O5 film has been planarized in order to obtain a to
tally flat top surface. In addition, the electrodes have been applied
on a totally insulating substrate, thus reducing the parasitic sensor
capacitance by a factor of ten. (C) 1997 Elsevier Science S.A.