A chemical sensor is a device that measures and detects chemical qualities in an analyte (the scientific term for a chemical substance being observed) and converts the sensed chemical data into electronic data.
A chemical sensor is a self-contained analytical device that can provide information about the chemical composition of its environment, that is, a liquid or a gas phase. Contact
The information is provided in the form of a measurable physical signal that is correlated with the concentration of a certain chemical species (termed as analyte).
Two main steps are involved in the functioning of a chemical sensors, namely, recognition and transduction. In the recognition step, analyte molecules interact selectively with receptor molecules or sites included in the structure of the recognition element of the sensor.
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