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Information × Registration Number 0224U002405, 0123U101695 , R & D reports Title Innovative high-performance bulk, film and nanocomposite materials for electro- and non-linear optical devices of micro- and nanoelectronics popup.stage_title Head Zachek Ihor R., Доктор фізико-математичних наук Registration Date 13-02-2024 Organization Lviv Polytechnic National University popup.description2  As a part of the project implementation, the technological regimes and conditions for the synthesis of nanocomposite materials were developed. Samples of nanocomposites based on water-soluble КВ5О84H2O (КВ5) crystals and nanoporous matrices with pore sizes of 10–100 nm were manufactured. The presence of KB5 crystallites in matrices of aluminum oxide Al2O3 and silicon dioxide SiO2 was proved by X-ray structural analysis. A special result - nanocomposites based on nanoporous matrices of Si and SiO2 filled with nanocrystallites of lithium niobate LiNbO3 using high-temperature (950 °C) technology were formed. This technology does not allow the use of Al2O3 nanomatrices, as they are destroyed under the influence of high temperatures. The setup for nonlinear optical research was modified and the second harmonic generation (SHG) was studied in nanocomposites Al2O3:Pt+OEP (platinum-octaethyl-porphyrin) and Al2O3:Hel+Ni (helicate with Ni2+ cations), as well as in the crystals of lithium niobate LiNbO3 depending on the direction of the SHG signal polarization and the angle of sample rotation. It is shown that the Al2O3:PtOEP composite has a high intensity of SHG and, accordingly, is promising for practical application. The priority method of extreme surfaces has been improved, by means of which the nonlinear optical effects, shift angles of acoustic waves (AW), extreme values of AW speeds and extreme surfaces of the piezoelectric effect have been studied for a number of crystalline materials (LiNbO3, CaWO4, etc.). The methods and installations for the experimental verification of the indicative surfaces (surfaces of anisotropy) of photoelasticity and for the reliable study of the electro-optical effect were also modified (the approbation was carried out on the model crystals of lithium niobate). Product Description popup.authors Andrushchak Anatolii S. Balaban Oksana V. Baluk Vasyl I. Buryi Oleh A. Venhryn Bohdan Ya. Vynnyk Dmytro M. Demianyshyn Nataliia M. Kohut Zinovii O. Mytsyk Bohdan H. Pelekh Yaroslav M. Senko Ihor M. popup.nrat_date 2024-02-13 Close