What are electrochemical biosensors used for?
Electrochemical biosensors provide an attractive means to analyze the content of a biological sample due to the direct conversion of a biological event to an electronic signal. Over the past decades several sensing concepts and related devices have been developed.
What is electronic biosensor?
A biosensor typically consists of a bio-receptor (enzyme/antibody/cell/nucleic acid/aptamer), transducer component (semi-conducting material/nanomaterial), and electronic system which includes a signal amplifier, processor & display. Transducers and electronics can be combined, e.g., in CMOS-based microsensor systems.
How do electrochemical biosensors work?
Electrochemical biosensors commonly depend on the enzymatic catalysis reaction between the immobilized biomolecules and the targeted analyte that produces or consumes electrons or ions, which affects the electrical properties of the solution, such an electric potential or current (Monošík et al., 2012 ).
What is the difference between a biosensor and a chemical sensor?
Chemical sensors contain usually two basic components connected in series: a chemical (molecular) recognition system (receptor) and a physico-chemical transducer. Biosensors are chemical sensors in which the recognition system utilises a biochemical mechanism ( Cammann, 1977, Turner et al., 1987 ).
What is wrong with biosensors?
A rapid proliferation of biosensors and their diversity has led to a lack of rigour in defining their performance criteria.
What are the topics covered in the study of biosensors?
The topics covered include an overview of different bio-recognition and detection methods and their application to biosensing in wearable sensors for human health. Joseph Wang is a Distinguished Professor, Nanoegineering Department Chair, ECS Fellow, and SAIC Endowed Chair at the University of California San Diego (UCSD).