ABSTRACT
More and more people are becoming interested in sensors and more and more research and development is being devoted to sensors. Biosensor market information can be found over all orders of magnitudes, depending on the source. It combines electrochemistry with micro-techniques such as planarization, both monolithic and in thick film, to result in devices such as monolithic and thick-film glucose sensors, urea sensors, dissolved oxygen sensors etc, based on voltammetry, potentiometry and conductometry. It describes what biosensors are and shows that glucose sensors are probably still the most important biosensors. Techniques such as potentiometry, voltarnmetry and conductometry are defined. It is written for engineers but is kept as simple as possible in order to make the elementary principles understoodandable. So, there are several indications that microelectrochemical biosensors will soon become a commercial reality.
