An intelligent multi-sensing sensor-array

A miniaturized multi ion-sensor (IS) array based on coated silver-stripe (CSS) technique is described. The K⁺-CSS-IS, Na ⁺-CSS-IS, and Ca²⁺CSS-IS studied so far show very good coated-wire electrode properties comparable to conventional ion-selective electrodes (ISE); the main characteristics are the near-Nernstian response over clinical range, a better selectivity and short response times. A very thin (300 nm), wide (1 mm), and long (70 mm) with circular tip area of 7 mm² silver metallic layer deposited on a glass substrate using chemical vapor deposition. It is shown that this approach could be used for the development of a cost-effective miniaturized multi-sensor array systems for clinical application for the determination of the ion activity or concentration by zero-current potentiometry method