"Радіотехнічні поля, сигнали, апарати та системи"

Author:

Lozovyi Sergii Viktorovych (National Technical University of Ukraine “Kiev Polytechnic Institute”, Kyiv, Ukraine)

One of the main branches of science and technology is a creation of miniature and cheap sensor elements for health care, agriculture and technological processes   applications. A great number of chemical and biochemical reactions cause the concentration of protons H+ (pH) in solutions to change. Basic application for pH measurements is standard potentiometric glass electrode. Unfortunately when one wants to use it as bio- or chemo-sensor device with chemical sensitive polymer membrane being attached, several problems occur. It is difficult to attach a selective membrane robustly to a wide non-plane pH sensitive glass surface and even attached once, membranes have to be changed frequently. In the case of bulky glass electrodes it is hardly to imagine using several electrodes with various selective membranes (with expensive ferments inhibited) in single solution simultaneously. That’s why ion-selective field effect transistors (ISFET) tend to be the main application for such measurements.

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Додатки:

Lozovyi S.V., theses

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