ABSTRACT
Chemical sensors (chemosensors) consist of two main components: a receptor and a detector. Receptors include enzymes, antibodies, and lipid layers, and are responsible for the selectivity of the sensor. The detector is not selective and acts as transducer, because it translates the physical or chemical changes of the receptor into an electrical signal. Detectors include transduction platforms having electrochemical (potentiometric, amperometric, impedance), piezoelectric, thermal or optical (refl ectrometry, interferometry, optical waveguide lightmode spectroscopy, total internal refl ection fl uorescence, surface plasmon resonance) properties.
