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205168

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P Parente et al.
The journal of physical chemistry. B, 117(6), 1600-1607 (2012-11-13)
Ceramic materials for skeletal repair and reconstruction are expanding to a number of different applications. Present research is addressing new compositions and performances to promote osseo-integration through metal coatings. Nanotechnology plays a key role in this research because nanostructures can...
Chenglu Liu et al.
Journal of nanoscience and nanotechnology, 12(1), 151-158 (2012-04-25)
Eu3+ and Dy(3+)-doped YVO4 nanocrystallites were successfully prepared at 400 degrees C in equal moles of NaNO3 and KNO3 molten salts. X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, transmission electronic microscopy (TEM), photoluminescence (PL) spectrum and lifetime were used...
Riya Dey et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 99, 288-291 (2012-10-23)
The Y(2)O(3) phosphor powder codoped with Nd(3+):Yb(3+) ions have been synthesized through optimized combustion route. Crystalline structures of the prepared samples have been investigated by powder X-ray diffraction technique. Efficient upconversion emission in the green region upon 980 nm NIR...
Masoud Allahkarami et al.
Dental materials : official publication of the Academy of Dental Materials, 27(12), 1279-1284 (2011-10-14)
Chipping failures observed clinically in bilayer systems of porcelain and zirconia restorations should be coupled with a monoclinic to tetragonal phase transformation in the zirconia layer due to the high compressive stress. Phase transformations were mapped using 2D micro X-ray...
Carolina Mochales et al.
The journal of physical chemistry. B, 117(6), 1694-1701 (2012-11-08)
The interest in electrophoretic deposition (EPD) for nanomaterials and ceramics production has widely increased due to the versatility of this technique to effectively combine different materials in unique shapes and structures. We successfully established an EPD layering process with submicrometer...
Cláudio M Lousada et al.
Physical chemistry chemical physics : PCCP, 15(15), 5539-5552 (2013-03-06)
We have performed a density functional theory (DFT) investigation of the interactions of H2O2, H2O and HO radicals with clusters of ZrO2, TiO2 and Y2O3. Different modes of H2O adsorption onto the clusters were studied. In almost all the cases...
Han Jin et al.
Talanta, 88, 318-323 (2012-01-24)
Yttria-stabilized zirconia (YSZ)-based amperometric NO(2) sensors comprised of an In(2)O(3) sensing-electrode (SE), a Pt counter-electrode (CE) and a Mn(2)O(3) reference-electrode (RE) in both tubular and rod geometries were fabricated and their sensing characteristics were examined. For comparative purposes, the performance...
Georgios A Sotiriou et al.
ACS nano, 6(5), 3888-3897 (2012-04-19)
Nanophosphors are light-emitting materials with stable optical properties that represent promising tools for bioimaging. The synthesis of nanophosphors, and thus the control of their surface properties, is, however, challenging. Here, flame aerosol technology is exploited to generate Tb-activated Y(2)O(3) nanophosphors...
Shanshan Jiang et al.
ChemSusChem, 5(10), 2023-2031 (2012-08-29)
It is generally recognized that the phase transition of a perovskite may be detrimental to the connection between cathode and electrolyte. Moreover, certain phase transitions may induce the formation of poor electronic and ionic conducting phase(s), thereby lowering the electrochemical...
Synthesis and Physicochemical Properties of Yttrium Oxide Doped with Neodymium and Lanthanum
Kruk A, et al.
Journal of Electronic Materials, 43(9) (2014)
Bipin Kumar Gupta et al.
Small (Weinheim an der Bergstrasse, Germany), 8(19), 3028-3034 (2012-07-19)
Highly luminescent-paramagnetic nanophosphors have a seminal role in biotechnology and biomedical research due to their potential applications in biolabeling, bioimaging, and drug delivery. Herein, the synthesis of high-quality, ultrafine, europium-doped yttrium oxide nanophosphors (Y(1.9)O(3):Eu(0.1)(3+)) using a modified sol-gel technique is...
Timur Sh Atabaev et al.
Journal of colloid and interface science, 373(1), 14-19 (2011-12-06)
Eu(3+) and Tb(3+) codoped Y(2)O(3) submicron particles were prepared using the simple urea homogeneous precipitation method. X-ray diffraction patterns revealed the synthesized particles to have a pure cubic Y(2)O(3) structure. Field-emission scanning electron microscopy and field-emission transmission electron microscopy showed...
Eun-Ok Oh et al.
Advanced materials (Deerfield Beach, Fla.), 24(25), 3373-3377 (2012-06-01)
An extremely thin bilayer electrolyte consisting of yttria-stabilized zirconia (YSZ) and gadolinia-doped ceria (GDC) is successfully fabricated on a sintered NiO-YSZ substrate. Major processing flaws are effectively eliminated by applying local constraints to YSZ nanoparticles, and excellent open circuit voltage...
T Radu et al.
Journal of biomedical materials research. Part A, 101(2), 472-477 (2012-08-14)
The behavior of yttria-alumina-silica spray-dried microspheres was investigated in vitro on a human keratinocyte cell line, first to exclude their cytotoxicity. The HaCaT cells were chosen due to their well-characterized phenotype and their phagocytic ability. Microscopic analysis and cell viability...
Qipeng Lu et al.
Journal of nanoscience and nanotechnology, 11(11), 9671-9675 (2012-03-15)
Y2O3:Er3+ upconversion materials with nanoporous structures were prepared by a hydrothermal method following a post-thermal treatment. The structure and morphology of the materials were characterized by X-ray diffraction (XRD) and field-emission scanning electron microscopy (FESEM). The results indicated that the...
Lin Wang et al.
Nanoscale, 5(3), 1116-1120 (2012-12-25)
We report the structure characterization and electronic property modification of single layer graphene (SLG) field-effect transistor (FET) devices top-gated using ultrathin Y(2)O(3) as dielectric layers. Based on the Boltzmann transport theory within variant screening, Coulomb scattering is confirmed quantitatively to...
Guangqing Guo et al.
Dental materials : official publication of the Academy of Dental Materials, 28(4), 360-368 (2011-12-14)
To fabricate and characterize dental composites reinforced with various amounts of zirconia-silica (ZS) or zirconia-yttria-silica (ZYS) ceramic nanofibers. Control composites (70 wt% glass particle filler, no nanofibers) and experimental composites (2.5, 5.0, and 7.5 wt% ZS or ZYS nanofibers replacing...
A Hosseini et al.
Human & experimental toxicology, 32(5), 544-553 (2013-05-23)
Type I diabetes mellitus is a metabolic disease caused by the impairment of pancreatic β-cells mainly mediated through oxidative stress and related apoptosis. Islets transplantation seems a promising treatment for these patients, but during islets transplant, various types of stresses...
Jie Liu et al.
Journal of nanoscience and nanotechnology, 11(4), 3616-3620 (2011-07-23)
Yttria nanorods, nanoflakes and microshperes have been prepared via solvothermal and homogeneous precipitation methods followed by further calcining treatment, without any catalysts, templates, or substrates, in which yttrium nitrate was used as the yttrium source, sodium hydroxide and urea as...
Timur Sh Atabaev et al.
Journal of biomedical materials research. Part A, 100(9), 2287-2294 (2012-04-14)
Increased demand of environment protection encouraged scientists to design products and processes that minimize the use and generation of hazardous substances. This work presents comprehensive result of large-scale fabrication and investigation of red-to-green tunable submicron spherical yttria particles codoped with...
Zeng Fan et al.
Nano letters, 11(6), 2202-2205 (2011-05-14)
Interlayering 17.5 nm of Yttria-doped ceria (YDC) thin films between bulk yttria-stabilized-zirconia electrolyte and a porous Pt cathode enhanced the performance of low-temperature solid oxide fuel cells. The added YDC interlayer (14.11% doped Y(2)O(3)) was fabricated by atomic layer deposition...
Influence of yttrium oxide on the phase formation and sintering of ceramics based on the MgAl2O4 spinel
Belousova OL, et al.
Glass Phys. Chem., 34(4), 474-479 (2008)
Jiangli Wang et al.
ChemSusChem, 5(7), 1307-1312 (2012-04-03)
Y(2)O(3):Er(3+) nanorods are synthesized by means of a hydrothermal method and then introduced into a TiO(2) electrode in a dye-sensitized solar cell (DSSC). Y(2)O(3):Er(3+) improves infrared light harvest via up-conversion luminescence and increases the photocurrent of the DSSC. The rare...
Zhengze Yu et al.
ACS nano, 9(11), 11064-11074 (2015-10-13)
Photodynamic therapy (PDT) is a well-established modality for cancer therapy, which locally kills cancer cells when light irradiates a photosensitizer. However, conventional PDT is often limited by the extremely short lifespan and severely limited diffusion distance of reactive oxygen species...
Monika Rai et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 97, 825-829 (2012-08-21)
In the present paper, Ho(3+) doped and Ho(3+)/Yb(3+) co-doped Y(2)O(3) phosphors have been synthesized using solution combustion technique and characterized for its structure and upconversion (UC) fluorescence as a function of Yb(3+) concentration. Effect of a variation in laser input...
Cheol Jang et al.
Optics express, 20(3), 2143-2148 (2012-02-15)
We demonstrate the optical characteristics of YVO4:Eu3+ phosphor in close proximity to Ag nanofilm to create a highly efficient emitting layer in mirror-type self-emissive displays. The propagating surface plasmon mode induced between the dielectric layer (MgO) and the Ag nanofilm...
Ian N Stanton et al.
Dalton transactions (Cambridge, England : 2003), 41(38), 11576-11578 (2012-09-04)
We report an upconverting nanomaterial composition, [Y(2)O(3); Yb (2%), Er (1%)], that converts both X-ray and high-fluence NIR irradiation to visible light. This composition is compared to a higher Yb(3+) doped composition, [Y(2)O(3); Yb (10%), Er (1%)], that displays diminished...
Sjoerd A Veldhuis et al.
Langmuir : the ACS journal of surfaces and colloids, 28(42), 15111-15117 (2012-10-04)
Typical surface areas of 5 × 5 mm(2) were patterned with high-aspect-ratio micrometer- and submicrometer-sized structures of yttria-stabilized zirconia using a combination of micromolding in capillaries and sol-gel chemistry. The influence of precursor solution concentration and mold geometry on the...
R V Yadav et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 103, 216-221 (2012-12-25)
Yb(3+)/Er(3+) codoped Y(2)O(3) phosphor and its composite with ZnO have been synthesized by combustion method. Morphology of the materials has been investigated using X-ray diffraction pattern (XRD) and scanning electron microscopy (SEM) techniques. XRD confirms the constituents as Y(2)O(3) and...