For the miniaturation of H-ion sensor, the reference electrode should be miniaturized. This can be achieved by differential amplification system with ISFET/Pt/REFET. REFET(REference FET) was developed by forming PVC membrane on the ISFET gate. This ne...
For the miniaturation of H-ion sensor, the reference electrode should be miniaturized. This can be achieved by differential amplification system with ISFET/Pt/REFET. REFET(REference FET) was developed by forming PVC membrane on the ISFET gate. This new REFET for the differential amplifier consisting of ISFET/Pt/REFET has shown a good operating characteristics, The new micro H-ion sensor has shown a sensitivity of 52mV/pH with a good linearity in the range of pH 4 to pH 10, and been able to eliminate the effects of temperature and light.