Impedimetric Biosensors for Medical Applications: Current Progress and Challenges
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A biosensor in its most simple form may be described as a device comprising three parts: a biological recognition system, a transducer, and a signal processing display (Conroy et al., 2009). Interaction of the analyte of interest with the biorecognition element is converted to a measurable signal by the transducer, before conversion to the readout or display (Vo-Dinh and Cullum, 2000). The basic structure of a biosensor is illustrated in Figure 2-1.