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
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Вибір небхідних матеріалів та модернізація технології синтезу наноструктурованих матеріалів. Рентгеноструктурні та спектроскопічні дослідження синтезованих матеріалів. Виготовлення зразків, модернізація та верифікація установок для дослідження електро- та нелінійно оптичного ефектів.
Head
Zachek Ihor R., Доктор фізико-математичних наук
Registration Date
13-02-2024
Organization
Lviv Polytechnic National University
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Search and creation of materials to ensure higher efficiency of electro-optical light beam control devices and non-linear optical devices due to the use of optimal spatial orientation of active device elements and/or technological approaches that will improve the properties of known active media (nanomatrices filled with crystalline material or liquid crystal with optimal (or close to it) spatial orientation of nanocrystallites); in addition, it is planned to prove the effectiveness of a new effect – the diffraction electro-optical one.
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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 КВ5О84H2O (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
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Andrushchak Anatolii S.
Mytsyk Bohdan H.
Demianyshyn Nataliia M.
Oleh A. Buryi
Pelekh Yaroslav M.
Venhryn Bohdan Ya.
Kohut Zinovii O.
Balaban Oksana V.
Vynnyk Dmytro M.
Senko Ihor M.
Baluk Vasyl I.
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2024-02-13
