Within electronics, an Electrolyte–insulator–semiconductor (EIS) sensor is a sensor that is made of these three components:
an electrolyte with the chemical that should be measured an insulator that allows field-effect interaction, without leak currents between the two other components a semiconductor to register the chemical changes The EIS sensor can be used in combination with other structures, for example to construct a light-addressable potentiometric sensor (LAPS).
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