Sensors and actuators b-chemical vol:34 issue:1-3 pages:258-264
A novel design technique for planar conductometric sensors is proposed. This procedure is based on the Schwartz-Christoffel conformal transform and keeps under control the design parameters for planar conductometric devices. The new design method is exemplified for the case of a new planar haematocrit sensor. A basic three electrode structure and a semipermeable membrane is considered as a starting point for its development. The proposed device allows simultaneous evaluation of plasma and blood conductivity at one single frequency in the low range of the spectrum. The haematocrit sensor is to be further used as an ultrafiltration monitoring device in the haemodialysis process.