Various material on integrated chemical sensors

and other potentially related topics...

"electronic noses"


Chem/Bio Defense


Various resaerch groups, companies:

Various conferences:

Various work on "bioelectronics"

Future products - the Electronic Tongue

The next step for NST Artificial Senses technology is the NST Liquid Analyser, "Electronic Tongue".

Prototypes of an Electronic Tongue developed at Linköping University has shown that it can be used to classify various samples such as fruit juices, still drinks and milk. Initial tests have shown that it is possible to follow developments such as ageing processes of milk and orange juice when stored at room temperature. Although these initial tests are not particularly complicated, the possible range of applications for the Electronic Tongue is believed to be as widespread as for the Electronic Nose.

Legin A.V., Rudnitskaya A.M., Vlasov Yu.G., Di Natale C., D'Amico A.; "Electronic tongue" a multisensor device for on-site analysis of complex liquids, The 9th International Conference on Modern Materials and Technologies: CIMTEC '98 Florence 14-19 June, 1998

Use of surface plasmon microscopy in an electronic tongue. Surfaceplasmon microscopy is a technique with which separate optical signals can be obtained from hundreds of small portions of a chip. These signals will have a certain relationship to the chemical composition of the water sample, if a chemically sensitive substance is applied to the chip surface. The projects aims to apply a large number of different sensitive substances to the different portions of the chip. This will form the basis for the development of an electronic tongue, which can give an impression of the chemical composition of the water, in the same way as existing electronic noses do for the gas phase. 3T, an engineering company and the MESA institute of the University of Twente co-operate in this project.

Abstract Volume 361 Issue 3 (1998) pp 255-260 ; conference contribution: Non-selective chemical sensors in analytical chemistry: from "electronic nose" to "electronic tongue," Y. Vlasov, Andrey Legin, Laboratory of Chemical Sensors, Chemistry Department, St. Petersburg University, St. Petersburg 199034, Russia

Received: 17 July 1997 / Revised: 19 February 1998 / Accepted: 24 February 1998

Abstract Development, recent historical background and analytical applications of promising sensor instruments based on sensor arrays with data processing by pattern recognition methods have been described. Attention is paid to the "electronic tongue" based on an array of original non-specific (non-selective) potentiometric chemical sensors. Application results for integral qualitative analysis of beverages and for quantitative analysis of biological liquids and solutions, containing heavy metals are reported. Discriminating abilities and precision obtained allow to consider "electronic tongue" as a perspective analytical tool.