Tiuleanu Dumitru is a renowned expert in Composite and Hybrid Materials Engineering, holding the title of Corresponding Member since 2017. In the specified year, his scholarly activities include:Publication of monographs in recognized international editions, including those by Springer.Contribution of articles to journals with impact factors, with a notable mention of IF 2.Presentation of articles in national compilations and international conference materials.Participation in international scientific forums, with one such participation abroad.Submission of one patent application, resulting in one positive decision and one obtained patent.Implementation of obtained patents.Scientific Results Achieved in the reference year:In the investigation of chalcogenide glasses, particularly within the ternary As-S-Ge system, Tiuleanu uncovered regions of exceptionally narrow compositions exhibiting a high level of structural self-organization. This phenomenon primarily stems from a sharp increase in the concentration of extremely flexible structural units (blocks). His meticulous Raman scattering analysis revealed such a compositional region around Ge7.7As15.3S77 within the pseudo-binary line (GeS4)x(AsS3)1-x. This discovery was leveraged to develop a technological process for producing solid electrolytes with dual electronic/ionic conductivity, based on self-organized spatial networks of chalcogenides. These solid electrolytes exhibit electrical conductivity hundreds of times greater than conventional chalcogenides, promising enhanced performance in electronic switches for various applications, including bioengineering.In 2023, his educational activities comprised:Development and delivery of a number of courses, particularly in master's programs.Supervision of two doctoral theses, both successfully defended and confirmed by ANACEC.Supervision of master's theses, though specific numbers are not provided.Creation and editing of instructional materials and textbooks.