Fluorescent sensor, definition

Fluorescence Sensing of Anions, p. 566 Fluorescent Sensors, p. 572 Molecular Logic Gates, p. 893 Molecular Squares, Boxes, and Cubes, p. 909 Molecular Switches, p. 917 Molecular Wires, p. 925 Molecular-Level Machines, p. 931 Photochemical Sensors, p. 1053 Rotaxanes and Pseudorotaxanes, p. 1194 Self-Assembling Catenanes, p. 1240 Self-Assembly Definition and Kinetic arid Thermodynamic Considerations, p. 1248... 

This definition also clarifies what is not a chemical sensor or biosensor for purposes of market projections and commercialization. Passive assays such as, for example, colorimetric chemical reactions, immunoassays, and nucleic acid probes are not sensors. While such assays do result in a quantifiable entity (such as color production, fluorescence, etc), the assay itself does not provide the means to quantify the response. Rather, a separate quantification system is required. 

V and therefore the cell reaction occurs spontaneously. These cells are sometimes referred to as Mackereth sensors . Such galvanic sensors are also often termed fuel cell sensors and it is possible to measure either the resulting current or the cell voltage. In the former case, the term amperometric sensor in its widest definition is still correct, although the cell is fundamentally different from the usual Faradaic amperometric systems. Note that for the determination of atmospheric oxygen an alternative has become available in recent years in the form of optical sensors based on fluorescence. These sensors are very robust as they do not contain electrodes or a liquid phase and show very fast response times. 

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