Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"LaF3"”.
-
Synthesis, characterization and fluorescence performance of LaF3:Ce3+ nanocrystals
… different types of labeling agents, Cerium-doped LaF3 nanocrystals (NCs) are considered to be a promising new class of luminescent materials. Usually, lanthanide-doped nanocrystals production entails the use of ligands and high-temperature, which limits their biological applications and lowers …
-
A feasibility evaluation of x-ray fluorescence emission tomography and x-ray luminescence tomography for real-time assessment of photodynamic therapy
… Luminescence Computed Tomography (XLCT) to image LaF3 and Y2O3 nanoparticles. A 3D XFCT/CT image of a mouse phantom conjugated with a NMR tube containing bromide and Y2O3 was produced. Additionally, a cross sectional imaging in XFCT/XLCT/CT of a mouse phantom with microcapillaries filled with …
-
Studies of Used Fuel Fluorination and U Extraction Based on Molten Salt Technology for Advanced Molten Salt Fuel Fabrication
… into uranium fluoride (UF4), lanthanum fluoride (LaF3), and yttrium fluoride (YF3). By sampling and recording the change in concentration over time, the reaction rate of all three oxides was determined and a temperature dependent reaction rate was reported from 500°C to 650°C. A zirconium oxide …
-
Understanding the Role of Gravity in the Crystallization Suppression of ZBLAN Glass
Fluorozirconate glasses, such as ZBLAN (ZrF4-BaF2-LaF3-AlF3-NaF), have the potential for optical transmission from 0.3 μm in the UV to 7 μm in the IR region. However, crystallites formed during the fiber drawing process prevent this glass from achieving its low loss-capability. Other researchers …
-
Species Chemistry and Electrochemical Separation in Molten Fluoride Salt
… fission products. Electrochemical behavior of LaF3 in molten FLiNaK salt was studied on both W and Mo inert working electrodes. Although the standard reduction potential of La (III) is more cathodic than that of the primary salt melt constituents K (I) and Na (I), the electrochemical separation …
-
Development of multi-physics capabilities in coupling computational fluid dynamics and thermodynamics for molten salt reactor applications
… such as, LiF, ThF4, UF4, CsF, Cs2, Cs2F2, LaF3, F, F2 posed to be almost insignificant when compared to other known volatile/gaseous fission products, such as xenon. This investigation provided an understanding of how fast the UF4/UF3 molar ratio reaches optimal design limits, which plays a …
-
Synthesis and evaluation of rare-earth doped glasses and crystals for optical refrigeration
… component of ZBLANI:Yb3+/Tm3+ (ZrF4 — BaF2 — LaF3 — AlF3 — NaF — InF3: YbF3/TmF3) glass to enable a material with significantly reduced transition-metal impurities. A method for OH- impurity removal and ultra-drying of the metal fluorides was also improved upon. Several characterization tools …
-
Terbium-based fluoride and oxide crystals for visible lasers
… LiLuF4 and LiTbF4, KY3F10 and KTb3F10, BaY2F8, LaF3, and TbF3 as fluorides materials and YAlO3 and TbAlO3, Y3Al5O12, and KY(WO4)2 as oxide materials. The host material plays a fundamental role in the capacity of Tb3+ laser emission as can help to decrease or even avoid detrimental excited state …
-
Synthesis, Functionalization, and Characterization of Dominant UV Emitting Upconverting Nanocrystals and Absolute Quantum Yield and Power Dependence Metrics for the Elucidation of Upconversion Mechanisms
… luminescent properties and 2) sodium co-doped LaF3 and BaLaF4 (0.5%Tm, 20%Yb), displaying 3 and 2 orders of magnitude enhancement of UV emissions due to controlled perturbation of the local crystal field environment. The Core @ Shell architectural derivatives of these materials exhibit an …