Project title

Nanoarchitectonics, physical and technological research and creation of antireflective materials.

Project content

The problem to solve:

Creation of a new laboratory in Ukraine for the fabrication of porous AAO matrices by electrochemical method and their modification by hydrothermal treatment.

Object and subject of research:

The object of the project research is a variety of nanoporous matrices of AAO of our own production with crystalline compounds obtained from saturated aqueous solutions of ADP, etc. (using elevated temperatures and ultrasound) and microporous matrices of Si, etc., which are filled with crystalline compounds from the melt - LiNbO₃, Bi₁₂SiO₂₀, etc. It is also foreseen to search for new high-temperature compounds for filling micro/nanoporous matrices to obtain samples with low reflection coefficients. The subject of the project research is spectroscopic study over the wavelength range of 1÷20 μm of prototypes of anti-reflective coating: composites, powder grains bonded with a bonding material and the development of an engineering model and the manufacture of a mock-up of an anti-reflective coating, its full-scale testing.

The purpose and main objectives of the study:

The project deals with the design and creation of materials with a low (~1-2%) reflectance in the infrared region of the spectrum. The ultimate goal is to develop technological recommendations for creating an anti-reflective material that could be relatively easily applied to surfaces of various shapes.

The main objectives of the project:

• creation of a chemical and technological laboratory for the production of nanoporous AAO membranes by the electrolytic method;
• optimization of synthesis processes of nanostructured materials based on nanoporous matrices of AAO, Si, SiO₂ and various filling materials;
• electron microscopic examination of the surfaces of the nanostructured materials synthesized with checking their pore content for the uniformity of penetration of the introduced material into the matrix bulk;
• X-ray diffraction and micro-Raman studies of nanostructured composite materials with detailed group theory analysis of Raman spectra;
• study of polarized reflection/transmission spectra over a wide range of 1÷20 μm;
• nonlinear-optical and parametric-optical studies of synthesized nanostructured materials;
• study of the influence of the size of the composite material (powder grains with a size of ~0.5-500 microns) on the reflection/transmission coefficient of electromagnetic radiation; selection of a bonding material (glue) for the powder grains of the composite material with a low reflection coefficient;
• development of a design concept and creation of a prototype of an antireflective surface coating, its full-scale testing.

Main results

1. The available information on the technology of optimal electrochemical synthesis of nanoporous AAO matrices has been analyzed.
2. A scheme of an experimental setup for the electrochemical synthesis of nanoporous AAO structures has been devised, its 2D drawing and 3D model have been prepared.
3. The technical requirements for a dedicated laboratory for this experimental setup have been analyzed.
4. A method for electrochemical synthesis of nanoporous AAO structures has been developed.
5. Recommendations have been prepared for the test approval of an experimental electrochemical synthesis setup for creating AAO matrices.

Originality and innovative output

• Combination of several latest methods for the synthesis of nanocrystallites of different symmetry and different synthesis conditions (from aqueous solution, from high-temperature melt) inside the bulk of porous matrices with different pore diameters (from 6 nm to 1 μm).
• A significant demand of practical synthesis of nanocomposites is the need to synthesize crystallites in nanometer-sized pores (> 6 nm), which significantly changes the technology of crystal synthesis itself.
• Methods for post-growth characterization of the chemical composition and spatial morphology of nanocrystallites synthesized in the thickness of nanoporous matrices also differ significantly from those usually used for structural characterization of macroscopic materials.
• Launch of a scientific and technological laboratory for electrochemical synthesis of porous AAO matrices.

Oral and poster presentations at international conferences based on the project outcome

1. Bukliv R, Adamiv V, Bordun I, Andrushchak N, Teslyuk I, Andrushchak A (2024) Analysis of some parameters of synthesized anodized aluminum oxide matrices. 2024 IEEE 17th International Conference on Advanced Trends in Radioelectronics, Telecommunications and Computer Engineering (TCSET), Lviv, Ukraine, pp. 359-363. https://doi.org/10.1109/TCSET64720.2024.10755874.
2. Bukliv R, Adamiv V, Teslyuk I, Andrushchak A (2024) Elemental composition and optical properties of nanoporous matrices with Al₂O₃. 4th International Conference on Innovative Materials and NanoEngineering (IMNE 2024), Dovgoluka, Ukraine, 51.
3. OPTICAL-PHYSICAL PROPERTIES OF NANOCRYSTALLINE STRUCTURES IN NANOPOROUS Аl₂О₃ MATRICES V. Adamiv¹, V. Horchynsky², I. Bordun², I. Teslyuk¹, R. Bukliv², A. Andrushchak². Current problems of fundamental sciences: materials of the VI International Scientific Conference - (Lutsk - Svityaz, June 9 - 12, 2025) - Lutsk: Vezha-Druk, 2025. - P. 9-12.

Publications

Scientific papers published in the course of the project:

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