Hydroxyapatite-Based Nanocomposites

Dr. Marzieh Rabiei is a postdoctoral researcher specializing in mechano-optoelectronics. She has an impressive record of publications, citations, and successful research projects, particularly at Kaunas University of Technology (KTU), Lithuania. Dr. Rabiei has contributed significantly to the synthesis of organic emitters, density functional theory (DFT) calculations, and the study of photophysical, mechanochromic, electrochemical, and electroluminescent properties. Her work includes the fabrication of advanced optical devices, and her findings have been published in leading Q1 journals. Notably, she authored a high-impact paper in the Chemical Engineering Journal on thermally activated delayed fluorescence dyes in OLEDs. Dr. Rabiei is also well-versed in materials characterization and has published a book on crystallite structures. Prof. habil. Dr. Arvydas Palevicius is a professor at the Department of Mechanical Engineering, Kaunas University of Technology (KTU), Lithuania. His research focuses on microsystems engineering, including biomechanical systems for biomedical applications. He explores biologically adaptive multifunctional nanocomposites, their synthesis, and the integration of periodic microstructures for optical sensors in medical and pharmaceutical technologies. A prolific scholar, Prof. Palevicius has authored over 100 scientific papers and co-authored two books published by Springer. He has supervised more than 10 successful Ph.D. dissertations and was awarded the Lithuanian Science Prize in 2018 for his contributions to micromechanical systems. Dr. Sohrab Nasiri is a chief researcher at Kaunas University of Technology (KTU), Lithuania. His expertise spans the synthesis of organic emitters, DFT modeling, mechanochromic luminescence, and the development of electrochemical and electroluminescent materials. During his Ph.D. at KTU, which he completed in just three years, Dr. Nasiri led two successful research projects and published several high-impact papers. His postdoctoral research expanded on these achievements, including a widely cited article in the Chemical Engineering Journal (IF 13.3) as corresponding author. He is experienced in device fabrication techniques such as solution processing and physical vapor deposition (PVD) and has made key contributions to the design of emitter layers for optoelectronic devices. Prof. Dr. Giedrius Janusas holds an M.Sc. in applied mathematics and a Ph.D. in mechanical engineering. For over 15 years, he has worked in the areas of composite material mechanics, microsystem dynamics, and statistical data analysis. His expertise also includes the application of holographic interferometry in micromechanical system diagnostics. Prof. Janusas has co-authored more than 100 scientific publications and is a recipient of the Lithuanian Science Prize (2018) for his work on micromechanical systems. He serves on the Doctoral Committee for Mechanical Engineering at KTU, is a part of the mechanics conference organizing team, and is a member of the editorial board of the journal Mechanika.

• Introduction.- Assessing Techniques for Determining Nano Crystal Size of Natural Hydroxy-apatite via X-Ray Diffraction.- Determination of Elasticity Modulus in Relation to Atomic Density of Planar Structures in Crystal Lattice Unit Cells.- Correlation Between Young’s Modulus and Planar Density of Unit Cell, Super Cells (2 × 2 × 2), Symmetry Cells of Perovskite (CaTiO3) Lattice.- X-ray Diffraction Analysis and the Williamson-Hall Method in the USDM Model to Estimate More Precise Values of Stress-Strain in the Unit Cell and Supercells (2 × 2 × 2) of Hydroxyapatite, as Validated by Ultrasonic Pulse-Echo Testing.- Novel Methodology for the Fabrication of In-vitro Bioactive Scaffolds Com-prised of Silver-Doped Hydroxyapatite Combined with Polyvinyltrimethox-ysilane.- Influence of Calcination Temperature on the Photophysical and Mechanical Characteristics of Hydroxyapatite Doped with 5 mol% Copper Iodide.