نتایج جستجو برای: nanocrystallites oxide
تعداد نتایج: 176640 فیلتر نتایج به سال:
The correlation between thermal vacancy characteristics and D03 ordering in ball-milled nanocrystalline (Fe3Si)95Nb5 was studied by combined measurements of x-ray diffraction and positron annihilation. Structural stabilization due to grain boundary segregation of Nb enables high-temperature positron lifetime measurements up to 1023 K from which vacancy formation parameters identical to those in...
Photoluminescence ~PL! spectra of as-made porous Si samples were obtained in a wide peak-wavelength range. After exposure to air or coupling with C60 molecules, the PL peak shifts to a pinning wavelength within the range of 610–630 nm. This pinning wavelength is almost independent of the size of the original porous Si nanocrystallites and both redshifting and blueshifting can occur for differen...
Three-dimensional (3D) printed polypropylene (PP) structures mechanically reinforced with antimony doped tin oxide (ATO) nanoparticles (NPs) at various concentrations were developed and fully characterized. Nanocomposite filaments produced by an optimized melt mixing extrusion process, utilized as feedstock for the Fused Filament Fabrication (FFF) of specimens. Samples 3D assessed via mechanica...
Nanostructurally stabilized zirconium oxide (NSZ) hard transparent fi lms were produced without chemical stabilizers by the ion beam assisted deposition technique (IBAD). A transmission electron microscopy study of the samples produced below 150 °C revealed that these fi lms are composed of zirconium oxide (ZrO2) nanocrystallites of diameters 7.5 ± 2.3 nm. X-ray and selected-area electron diffr...
Visible-light-responsive tubular N-doped TiO2 nanocrystallites were synthesized via an environment-conscious solvothermal treatment of protonated titanate nanotubes in an NH4Cl/ethanol/water solution.
Using a high-temperature organic solution reduction method, highly crystalline and single domain bismuth nanoparticles have been synthesized and self-assembled.
: Photoluminescence spectroscopy and atom probe tomography were used to explore the optical activity and microstructure of Er3+-doped Si-rich SiO2 thin films fabricated by radio-frequency magnetron sputtering. The effect of post-fabrication annealing treatment on the properties of the films was investigated. The evolution of the nanoscale structure upon an annealing treatment was found to contr...
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