Samojlov A. Employment of bimetallic layers and planar dielectric structures in optoelectronical sensors

The work is devoted to investigations of physical and chemical processes taking place at the boundary between a thin metal film and gas or liquid media with the purpose of optimization of the characteristics of the biosensor based on effect of optical excitation of a surface electromagnetic wave in a thin metal film at complete internal reflection. The problem of optimal choice of a carrier material of surface waves from the point of view of reaching maximal sensitivity and unreactiveness of a working surface of the biosensor based on SPR is researched. The behaviour of multilayer metal films as environments - carriers of surface plasmons is parsed. The influence of optical parameters of a multilayer metal film on on the form of a SPR-curve is investigated. Is shown, that the application of bimetallic films silver - gold allows to influence on main parameters of a SPR-curve - angular position of a minimum and shape is independent. The sensor control of vapours HCl based on SPR is created. The new typeof the biosensor based on planar polarization interferometer (PPI), which utillized penetration of an electromagnetic radiation into an external environment is offered. The optimization of a construction of the biosensor based on PPI is carried out. The optimized construction of the biosensor as the refractometer and immunosensor was tested.