Electrolyte-Insulator-Semiconductor
Encyclopedia
An Electrolyte–insulator–semiconductor (EIS) sensor is a sensor
that is made of these three components:
The EIS sensor can be used in combination with other structures, for example to construct a light-addressable potentiometric sensor
(LAPS).
Sensor
A sensor is a device that measures a physical quantity and converts it into a signal which can be read by an observer or by an instrument. For example, a mercury-in-glass thermometer converts the measured temperature into expansion and contraction of a liquid which can be read on a calibrated...
that is made of these three components:
- an electrolyteElectrolyteIn chemistry, an electrolyte is any substance containing free ions that make the substance electrically conductive. The most typical electrolyte is an ionic solution, but molten electrolytes and solid electrolytes are also possible....
with the chemical that should be measured - an insulatorElectrical insulationthumb|250px|[[Coaxial Cable]] with dielectric insulator supporting a central coreThis article refers to electrical insulation. For insulation of heat, see Thermal insulation...
that allows field-effect interaction, without leak currents between the two other components - a semiconductorSemiconductorA semiconductor is a material with electrical conductivity due to electron flow intermediate in magnitude between that of a conductor and an insulator. This means a conductivity roughly in the range of 103 to 10−8 siemens per centimeter...
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
Light-addressable potentiometric sensor
A light-addressable potentiometric sensor is a sensor that uses light to select what will be measured. Light can activate carriers in semiconductors.- History :...
(LAPS).