Dorozinsky G. Development of design and technological methods to increase measurement accuracy and sensitivity of devices based on the phenomenon of surface plasmon resonance

The dissertation is devoted to the development of design and technological methods for improving the accuracy of measurement of the refractive index of the analyte and the sensitivity of devices based on the phenomenon of surface plasmon resonance. It was established that the increase in wavelength surface plasmons excitation from 650 nm to 1200 reduces measurement error of the refractive index of the analyte 7 times and increases the sensitivity of the device in 2,4 times, due to decreasing approximation error measured reflection characteristics of the device due to its narrowing with increasing wavelength . For the first time shown that the application of a 4-layer two-component coating gradient sensing element (the first two layers - the gold thickness of 15 nm and each single layer thickness of about 30 nm with reduced surface roughness of 2.5 times, and a fourth layer of silicon oxide with a porous developed surface) leads to a decrease in absolute error of measurement of the refractive index of the analyte 5 times and enhances the intensity and interaction with the analyte and increase response sensor device.