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Information × Registration Number 0225U002718, (0122U001806) , R & D reports Title Effects of nanostructuring as the newest innovative platform of multifunctionality of advanced covalent-network glass systems popup.stage_title Ефекти наноструктурування в метал-активованих ковалентно-сіткових склуватих системах на основі халькогенідів, халькогалогенідів та боратів, пов’язані з впровадженням РЗ активаторів Head Shpotiuk Oleh Yo., д.ф.-м.н. Registration Date 01-04-2025 Organization Ivan Franko National University of Lviv popup.description1 The aim of the project is to study the physical laws and establish microstructural mechanisms of nanostructuring effects in metal-activated covalent-network glass systems (CNGS) based on chalcogenide glasses (CG), chalcohalide glasses (CHG) and borate glasses (BG). Successful achievement of this goal (establishing the scientific basis of multifunctionality of a new class of nanomaterials - CNGS) is a key factor in creating reproducible, reliable and predictable media for modern optoelectronics, quantum electronics, photonics, biomedicine and special sensors. popup.description2 Physical peculiarities and mechanisms of nanostructurization under mechanochemical treatment and doping by metallic and rare-earth (RE) activators were recognized in covalent-network glassy systems based on chalcogenide, chalcohalide and borate glasses (ChG, ChHG, BG). Methodology of nanostructurization phenomena in these systems modified by metallic and RE activators was justified for guided photonics, IR optics, optoelectronics, sensing and telecommunication technique. The partial tasks have been resolved to achieve main aim of the project, specifically: 1) unmodified glassy systems based on Asx(S/Se)100-x, 65GeS2-25Ga2S3-10CsCl and Li2B4O7 were prepared, their microstructure and optical properties were examined; quantum-chemical modelling of intrinsic inhomogeneities in was performed, optimal compositions of vitreous media most suitable for metallic and RE doping were defined; configuration-enthalpic model was developed to parameterize nanostructurization in these systems under mechanochemical activation; 2) effects of metallic activators were studied in metal-activated ChG, ChHG and BG, in part, Gax(As0.4Se0.6)100-x for x=1-5; (80GeS2-20Ga2S3)100-x(CsCl)x for х=0, 5, 10, 15, 20, including the optimized (65GeS2-25Ga2S3)-10CsCl composition; and Li2B4O7:Ag/Gd/Er; their exploitation properties were studied and mrchanisms of induced nanostructurization were identified; 3) metal-activated glassy systems with RE ions (incl. As/Ge-S/S-Ga:Er3+, 65GeS2-25Ga2S3-10CsCl:Er3+ and Li2B4O7:Er3+) were synthesized, their mechanochemical treatment was performed; exploitation properties and respective atomic-specific and atomic-deficient species were studied in systems modified by metallic activators and RE ions; nanostructurization phenomenology (incl. analytical description and microstructural mechanisms) was recognized to develop the algorithm for glassy systems with beforehand determined exploitation properties. Product Description popup.authors Adamiv Volodymyr T. Adamenko Dmytro I. Boiko Vitalii T. Vlokh Rostyslav O. Dudok Taras H. Kostyrko Myroslav Ye. Tesliuk Ihor M. Shpotiuk Oleh Yo. Shpotyuk Yaroslav O. popup.nrat_date 2025-04-01 Close