The effect of chip encapsulation on response times during measurements in flowing media of low viscosity is smaller than has generally been assumed. (Quelle: bmb+f Forschungslandkarte Deutschland 1998)
The encapsulation of sensors shown in Fig.2a merely extended the time lag by about 0.1s. (Quelle: bmb+f Forschungslandkarte Deutschland 1998)
In contrast, the sensor shown in Fig.2b has a so called ISFET tongue configuration in which the chip surface itself is passivated so that only the bonding points and electrical connections require encapsulation. (Quelle: bmb+f Forschungslandkarte Deutschland 1998)