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A chemical sensor array is a sensor architecture with multiple sensor components that create a pattern for analyte detection from the additive responses of individual sensor components. There exist several types of chemical sensor arrays including electronic, optical, acoustic wave, and potentiometric devices.
3 Chemical. 4 Electric current, electric potential, magnetic, radio. ... Speed sensors are machines used to detect the speed of an object, usually a transport vehicle ...
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. [ 5 ] [ 6 ] 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 ).
Potentiometric solid state gas sensors have been generally classified into three broad groups. Type I sensors have an electrolyte containing mobile ions of the chemical species in the gas phase that it is monitoring. The commercial product, YSZ oxygen sensor, [1] is an example of type I.
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Simplified schematic of a single gap chemiresistive sensor. (not to scale) A chemiresistor is a material that changes its electrical resistance in response to changes in the nearby chemical environment. [1] Chemiresistors are a class of chemical sensors that rely on the direct chemical interaction between the sensing material and the analyte. [2]
Systems of electronic skins (or robot skins) with built-in biosensors (or chemical sensors) and human-machine interfaces may enable wearable as well as remote sensed device- or robotic-sensing of pathogens (as well as of several hazardous materials and tactile perceptions). [113] [additional citation(s) needed]
The recognition moiety is responsible for binding to the analyte in a selective and reversible manner. If the binding sites are 'irreversible chemical reactions,' the indicators are described as fluorescent chemodosimeters, or fluorescent probes. An active communication pathway has to be open between the two moieties for the sensor to operate.
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