https://repository.utm.md/handle/5014/15 Fri, 16 Oct 2026 03:56:16 GMT 2026-10-16T03:56:16Z https://repository.utm.md/handle/5014/37406 Dielectric Materials and Application Volumul include materialele 10th International Symposium on Dielectric Materials and Application. Organizator: Universitatea Tehnică a Moldovei. Texte în limba: engleză. Thu, 01 Jan 2026 00:00:00 GMT https://repository.utm.md/handle/5014/37406 2026-01-01T00:00:00Z https://repository.utm.md/handle/5014/37405 Super-radiant emission spectra of tryptophan under UV exposure for biomedical applications TURCAN, M.; TONU, V.; STARODUB, E.; BAZGAN, S.; PASLARI, T.; ENAKI, N.; VASEASHTA, A. We proposed a model of super radiant Raman scattering with substantial convertion into Stokes for the description of superradiance in Tryptophan injected into biomolecules proteins. This paper further explores the coherent radiative processes in Tryptophan. We propose a master equation formalism to describe the superradiation phenomenon, accounting for critical radiation parameters such as pulse duration, field intensity, and resonant frequency. We experimentally characterize the evolution of absorption and emission spectra of Tryptophan under targeted Ultraviolet C (UVC) irradiation. A detailed analysis is provided regarding the wavelengthdependent response and the intensitydriven photochemical alterations of the amino acid. Furthermore, the research investigates the correlation between the electronic relaxation of Tryptophan and the germicidal efficacy of UVC radiation on yeast cultures. By examining the photoinduced damage to proteinbased dielectric structures, it is demonstrated that the fundamental role of radiative transitions in determining the stability and biological activity of microorganisms. The findings contribute to the development of advanced photonic tools for biomedical sensing and sterilization technologies. This paper was supported by the projects: No. ANCD 25.80012.5007.36TC and subprogram 011206. Thu, 01 Jan 2026 00:00:00 GMT https://repository.utm.md/handle/5014/37405 2026-01-01T00:00:00Z https://repository.utm.md/handle/5014/37404 Structural and electrical properties of (ZnO)k*Me2O3 (Me = Al, Ga, In) ceramics activated with halogens and zinc COLIBABA, G. V.; KOLTSOV, M. A.; RUSNAC, D.; UNTILA, D.; SPALATU, N. High-power magnetron sputtering is one of the most reproducible methods for the deposition of ZnO thin films with high structural perfection and low contamination level. The highest film quality requires homogeneous, highly thermally conductive ceramic targets, sintered at extremely high temperatures (1500 °C). Recently, a new lowtemperature method for sintering ZnO based on chemical vapor transport (CVT) has been proposed. This work was supported under the project No. 25.80013.5007.10RE. Thu, 01 Jan 2026 00:00:00 GMT https://repository.utm.md/handle/5014/37404 2026-01-01T00:00:00Z https://repository.utm.md/handle/5014/37403 Electrospun multifunctional nanofibrous materials CRECIUNE, C.; CECHIN, C.; TIRON, A.; CIOBANU, V.; MONAICO, E. V. Electrospinning is a versatile and widely employed technique for the fabrication of nanofibrous polymeric or semiconductor materials with controlled morphology, high surface-to-volume ratio, and tunable functional properties. ZnO nanofibers fabricated by this method are widely investigated due to the material properties such as electrical, optical, or antibacterial activity, making it suitable for multifunctional applications. Besides ZnO, tin sulfide-based materials, including SnS and SnS₂, have demonstrated promising performance in optoelectronic devices such as photodetectors as well as in photocatalytic processes, particularly in the case of SnS₂ due to its favorable electronic structure. This work was supported by institutional subprogram no. 020402, “Development of technologies and investigation of the properties of layered semiconductor compounds, hybrid nanostructures, and laser sources,” and by the “Young Researchers” project no. 24.80012.5007.12TC. Thu, 01 Jan 2026 00:00:00 GMT https://repository.utm.md/handle/5014/37403 2026-01-01T00:00:00Z