Materials Literature
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Texture engineering of thin films with controlled crystalline orientation is essential in tuning their properties. We have successfully prepared ZnO:In thin films via chemical bath deposition (CBD), with the preferred orientation of the films varying from [002] to [100] and [110] by simply altering the solvent composi…
Lead zirconate titanate ( PZT ) ceramics with one‐dimensional ordered pore channel structure (3‐1 type porous PZT ceramics) were prepared by a freeze‐casting process. Interestingly they showed higher piezoelectric coefficients than those of porous PZT ceramics of other connectivity patterns and even corresponding dens…
PuPO4 was prepared by a solid state reaction method and its crystal structure at room temperature was solved by powder X-ray diffraction combined with Rietveld refinement. High resolution XANES measurements confirm the +III valence state of plutonium, in agreement with valence bond derivation. The presence of the amer…
BaCuSeF and related compounds, M Cu Q F ( M = Ba, Sr; Q = Se, S), are known to show p-type conduction. The formation energies of the Cu vacancy Δ H [V Cu ] in a M Cu Q F system were computed by first-principles calculation with a generalized gradient approximation (GGA) of the Perdew–Burke–Ernzerhof (PBE) functional a…
ABSTRACT The thermal stability of the resin matrix is an important factor affecting the safety performance of fiber‐reinforced bulletproof composites (FRBCs) during their service period. In this study, two kinds of waterborne polyurethanes based on polyester diol (PEDL218) and isophorone diisocyanate were synthesized;…
Synthesis of internally doped Cu:ZnSe QDs in an aqueous solution still suffers from narrow tunable emissions from the blue to green light window. In this work, we extended the emission window of aqueous Cu:ZnSe QDs to the yellow light window. Our results show that high solution pH, multiple injections of Zn precursors…
Abstract Materials that have both conductivity and photocatalytic activity are widely applied in electrical devices and as environmental pollution handles. Based on such requirements, phosphorus and aluminium co‐doped conductive zinc oxide nanocrystals (PAZO NCs) with novel visible‐light catalytic activities have been…
Temperature-programmed desorption (TPD) experiments were performed on gas-phase manganese oxide cluster ions, namely, Mn(n)O(m)(+) (n = 3-20) and Mn(n)O(m)(-) (n = 3-18). These cluster ions were prepared by laser ablation of a manganese rod in the presence of oxygen gas, and their composition was investigated using ma…
ABSTRACT Microcellular foaming of poly(phenylene sulfide)/poly(ether sulfones) (PPS/PES) blends presents a promising approach to produce high‐performance cellular materials with tailored microstructures and enhanced properties. This study investigated the effects of multiphase blend composition and process conditions…
In order to improve the mechanical properties of poly(L-lactide) (PLLA) based implants, a study was made of how far well dispersed multi-walled carbon nanotubes (MWCNTs) within a PLLA matrix were able to positively affect these properties. To this end, pyrene-end-functionalized poly(L-lactide) (py-end-PLLA) was evalua…
Low‐pressure chemical vapor deposition and infiltration was used for the first time to fabricate SiBCN ceramics with proper dielectric properties to lower the preparation temperature. SiBCN ceramics indicated by thermodynamic phase diagram with different phase compositions from CH 3 SiCl 3 –NH 3 –BCl 3 ‐H 2 could be o…
The development of photonic materials for efficient energy conversion and high‐power solid‐state lasers is currently pursued given the wide range of applicable technologies and the possibility to help meet global energy demands in laser fusion power plants. In this work, Cu + ions successfully incorporated in aluminop…
In this paper, we proposed a novel hot‐pressing flowing sintering (HPFS) for texturing ceramics. The perfectly two‐dimensional textured Si 3 N 4 ceramics were fabricated by HPFS. The Lotgering orientation factor f L for Si 3 N 4 texture was 0.9975. During earlier sintering stage, the specimen flowed along the plane wh…
In this work, we focus on the thickness dependence of the electric polarization in a freestanding BaTiO 3 thin film. The locations of titanium and oxygen ions as well as their relative displacements were directly observed and measured by using aberration‐corrected transmission electron microscopy (AC‐TEM). It is found…
In order to judge the usability of novel semiconductors for field-effect transistors (FETs), fast tools for the assessment of relevant electrical transistor parameters are necessary. We discuss here the use of an ionic gel (IG) as gate material that allows the quick fabrication of, for example, graphene FETs. Our IG-F…
X-ray diffraction (XRD) patterns, electron paramagnetic resonance (EPR) powder spectra (9 and 34 GHz) and the magnetic susceptibility of BaTiO3 + 0.04 BaO + x/2 Co2O3 (0.001 ⩽ x ⩽ 0.02) ceramics were studied to investigate the incorporation of Co ions in the BaTiO3 lattice and their valence states as well as the devel…
Compact Al 2 O 3 ‐MgO·Al 2 O 3 ‐CaO·6Al 2 O 3 ( AMC ) composite was obtained by melting technology using industrial alumina, light‐burned magnesia, and quick lime as raw materials based on the Al 2 O 3 ‐MgO‐CaO ternary phase diagram. The results show that the phases of MgO·Al 2 O 3 and Al 2 O 3 are formed as the main…
Transformational elastodynamics can be used to protect sensitive structures from harmful waves and vibrations. By designing the material properties in a region around the sensitive structure, a cloak, the incident waves can be redirected as to cause minimal or no harmful response on the pertinent structure. In this pa…
We report on a solution-based method to fabricate a multidimensional heterojunction composed of one-dimensional zinc oxide nanorods (ZnO NRs) decorated with zero-dimensional cupric oxide nanoparticles (CuO NPs). The ZnO NRs were vertically grown on a reduced graphene oxide (rGO) thin film, and the sensing properties o…
The interpretation of angular symmetries in electron nanodiffraction patterns from thin amorphous specimens is examined. It is found that in general there are odd symmetries in experimental electron nanodiffraction patterns. Using simulation, it is demonstrated that this effect can be attributed to dynamical scatterin…