Design of a miniature electrolyte conductivity probe using ISFETs in a four point configuration

Volanschi, A. and Olthuis, W. and Bergveld, P. (1994) Design of a miniature electrolyte conductivity probe using ISFETs in a four point configuration. Sensors and Actuators B: Chemical, 18-19 (1-3). pp. 404-407. ISSN 0925-4005

Preview

PDF
393Kb

Abstract:	In this work the design, fabrication and testing of a four point electrode configuration based on ISFETs for the measurement of electrolytic conductivity are presented. The final design uses a distance between the ISFET gates of only 100 ¿m allowing a chip area in contact with the electrolyte of 2.2×2.2 mm. KCl electrolyte concentrations ranging from 0.1 mM to 1 M were used for testing the designed probe. Measurement results show a linear dependence of the output voltage of the amplifier on the electrolyte concentration.
Item Type:	Article
Copyright:	© 1994 Elsevier Science
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Biomedical and Environmental Sensor systems (BIOS)
Link to this item:	http://purl.utwente.nl/publications/15058
Official URL:	http://dx.doi.org/10.1016/0925-4005(93)01014-U
Export this item as:	BibTeX EndNote HTML Citation Reference Manager

Show download statistics for this publication

Repository Staff Only: item control page

Metis ID: 111951