An electronic nose composed of small, inexpensive chemical sensors would have many potential applications in areas such as breath analysis, hazardous gas detection and industrial process monitoring. An electronic nose, in anology to a biological nose, consists of an array of non-specific chemical sensors. With pattern recognition, the system can recognize individual chemicals or scents. Capacit...

The conventional way of applying chemical sensors is in an open-loop configuration. A parameter of the chemical domain, such as a gas or ion concentration, is converted into a parameter of the mechanical or electrical domain, often with non-linear transfer characteristics. The paramagnetic oxygen sensor and the ISFET-based urea sensor are treated as typical examples. Such an open-loop procedure...

With much anticipation after a one-year delay caused by the COVID-19 pandemic, Mátrafüred International Conference on Electrochemical Sensors was held June 12-17, 2022, in Visegrád, Hungary. This issue of Electroanalysis includes collection papers first presented at this meeting, which now has 50 year long history as leading conference electroanalytical chemistry and chemical biosensing. Once a...

Wireless chemical sensors have been developed as a result of advances in sensing and wireless communication technology. Because their mobility widespread availability, smartphones extensively combined with such hand-held detectors, sensor chips, test strips for biochemical detection. Smartphones are frequently used controllers, analyzers, displayers quick, authentic, point-of-care monitoring, w...

Chemical gas sensors based on nanowires can find a wide range of applications in clinical assaying, environmental emission control, explosive detection, agricultural storage and shipping, and workplace hazard monitoring. Sensors in the forms of nanowires are expected to have significantly enhanced performance due to high surfacevolume ratio and quasi-one-dimensional confinement in nanowires. In...