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The article gives an overview on the contemporary state of knowledge concerning all kinds of chemical sensors. Based on the official IUPAC definitions, their most important groups are considered in more detail. Special attention is given optical, electrochemical, electrical, mass-sensitive, magnetic and thermometric sensors.
DEFINITIONS. chemical sensor is a device that transforms chemical information, ranging from the concentration of a specific sample component to total composition analysis, into an analytically useful signal.
24 Αυγ 2016 · 1. Introduction. The chemical sensor is an analyzer that responds to a particular analyte in a selective and reversible way and transforms input chemical quantity, ranging from the concentration of a specific sample component to a total composition analysis, into an analytically electrical signal [1, 2], as depicted in Figure 1.
This chapter presents an overview of sensors and their classifications as thermal, magnetic optical, mechanical and chemical. The transfer functions, characteristics and specifications are also discussed with introduction to basic forms of sensors. 1.1.
Electrochemical sensors are made up of three essential components: a receptor that binds the sample, the sample or analyte, and a transducer to convert the reaction into a measurable electrical signal. In the case of electrochemical sensors, the electrode acts as the transducer. 6
9 Ιαν 2019 · New generations of established sensors, such as metal oxides, are being pushed to new limits by employing nanostructured materials. One of the promises of chemical sensors is that they can be widely deployed to provide comprehensive spatial and temporal analysis of a particular problem.
The American National Standards Institute (ANSI) standard MC6.1 defines a transducer as "a device which provides a usable output in response to a specific measurand" (Instrument Society of America, 1975).
