Vistak M. Modification of liquid crystal structures and noise immunity of signal converters for optical sensor devices.

The dissertation is devoted to the problem of modification of liquid crystal structures and obstacle stable signal converters for optical sensor devices. The spectral and electro-optical properties both own and induced cholesteric liquid crystals modified with nanoscale particles are presented in paper. A study of intercalation of nanocomposites based on cholesteric liquid crystal modified with nanoscale particles in porous materials, such as aluminum oxide and silicon were carried out. It has been found regularities of gas molecules effects to change of spectral characteristics of synthesized nanocomposites. It has been studied and developed the active media of converters of primary sensors of biological substances. It has been developed obstacle stable signal converters, is the basis of which the there are impedance converters. The theoretical principles of operation and circuitry of wide range of impedance converters, signal converters, optical sensors to provide high signal selectivity informative and effective suppression of spurious signal components from third-party sources of light and electromagnetic interference.