Materials Literature
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Composites based on polymers with conductive fillers have been gaining more and more significant roles in a variety of technological domains and are in the research focus of numerous studies as a part of growing research trend. Natural polymers based on renewable materials with addition of chosen materials can be dire…
We performed first-principles theoretical calculations to examine the interactions between oxygen vacancy (V O ) and rare-earth (RE) elements in barium titanate (BaTiO 3 ), in order to clarify the mechanism of V O trapping by RE dopants, which affects the insulating reliability of BaTiO 3 -based multilayer ceramic cap…
It is a common finding that titanocene-derived precursors do not yield TiO2 films in ALD with water. For instance, ALD with Ti(OMe)4 and water gives 0.5 A/cycle, while TiCp*(OMe)3 does not show any growth (Me=CH3, Cp* = C5(CH3)5). This is apparently in contradiction with the computed reactivity of the ligands: the ene…
The shrinkage behaviors of BaTiO 3 ceramics in a nonisothermal process were quantitatively monitored to clarify the mechanism of two-step sintering. During the increase in temperature, shrinkage behaviors due to grain boundary diffusion, volume diffusion, and grain rearrangement were observed. From the analysis of the…
The exceptional properties of lead-based perovskite-type (ABO(3)) relaxor ferroelectrics are due to their structural inhomogeneities. At ambient conditions, the average structure is pseudocubic but rich in ferroic nanoregions too small to be directly studied by conventional diffraction analysis. However, combining in…
Barium titanate (BaTiO 3 , BT)–potassium niobate (KNbO 3 , KN) (BT–KN) nanostructured ceramics with a distorted interface region, i.e., artificial morphotropic phase boundary (MPB) structure, were prepared by the solvothermal method. The results of the optimization of reaction conditions showed that the metastable reg…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTA Quinoliene-Containing Conjugated Polymer-Based Sensing Platform for Amino AcidsGang He, Ni Yan, Hong Cui, Taihong Liu, Liping Ding, and Yu Fang*View Author Information Key Laboratory of Applied Surface and Colloid Chemistry (Shaan…
We study photo-induced static and dynamic spectral changes in self-assembled CdSe/ZnS quantum dot (QD) thin films with varying QD concentrations under ambient conditions. Using spatially resolved scanning photoluminescence microscopy in conjunction with spectrally resolved time-correlated photon counting, we measure t…
Sodium lanthanide sulfate NaLn(SO 4 ) 2 ·H 2 O (Ln = Y, La to Yb) nano/microcrystals with multiform morphologies were successfully synthesized by a facile and effective hydrothermal method. The photoluminescence properties of the Ce 3+ and Tb 3+ single-doped as well as the Ce 3+ –Tb 3+ codoped NaY(SO 4 ) 2 ·H 2 O micr…
A general dynamic hysteresis core loss model has been developed. Experimental data for different lamination thicknesses have been measured and analyzed at various frequencies. Based on the analysis, a dynamic hysteresis finite element core loss model is established and validated by experiments. The developed dynamic h…
Reflected Mueller matrix spectra were measured and simulated for asymmetrical photoresist master diffraction gratings in conical mounting (i.e., the direction of grating grooves was not perpendicular to the plane of light incidence). From the electromagnetic reciprocity theorem, Mueller matrix of symmetric grating (co…
The main problem of renewable energy sources is their intermittency. Integration of energy storage devices with renewable energy systems can offer solution to this problem simply by storing excess produced energy for utilization when needed later on. Energy storage devices are also essential for other applications suc…
Multiscale molecular modeling (M 3 ) is applied in many fields of material science, but it is particularly important in the polymer science, due to the wide range of phenomena occurring at different scales which influence the ultimate properties of the materials. In this context, M 3 plays a crucial role in the design…
The modification of ferroelectric vortex domain patterns in hexagonal manganites (here exemplified by YMnO3 and HoMnO3) owing to chemical treatment, thermal annealing, and local electric-field poling is investigated by piezoresponse force microscopy. Chemical treatment transfers the domain pattern into a topographical…
The oxidation kinetics of SiC fiber-reinforced SiC matrix composites with a BN interphase (SiC/BN/SiC) and the constituent fibers was characterized by thermogravimetric analysis and microstructural characterization at temperatures (816-1538°C) and oxygen partial pressures (0.1% to 5% O 2 ) relevant to the hypersonic f…
Films from three different bloom strength were prepared and dried at three different temperatures (20 °C, 40 °C and 60 °C) to investigate whether the differences in ordering and aggregation during film formation, under controlled drying conditions, reflect changes in their mechanical properties. Results showed that Yo…
Phase-pure epitaxial thin films of (Ti,V)2GeC have been grown onto Al2O3(0001) substrates via magnetron sputtering. The c lattice parameter is determined to be 12.59 Å, corresponding to a 50/50 Ti/V solid solution according to Vegard’s law, and the overall (Ti,V):Ge:C composition is 2:1:1 as determined by elastic reco…
This paper presents investigations into the eddy current losses of laminated stator cores with electrically connected edge areas. The application of various manufacturing processes can lead to an electrical connection of the lamination core edges and therefore to additional eddy current losses. This paper considers th…
The synthesis and characterization of a novel fixative, guar gum-graft-poly(acrylamide-co-diallyldimethylammonium chloride) (GG-g-p(AM-co-DADMAC)) polymer is described. The grafted polymerproved to be effective at adsorbing hydrophobic wood resin particles onto papermaking fibre surfaces, thus removing wood resins fro…
Abstract An unusual occurrence of palygorskite was found near Montestrutto, lower Val d'Aosta (Italy), within an eclogite-facies leucogneiss of the Sesia-Lanzo zone. Under the optical microscope the mineral appears as a felt of fibres hundreds of μm long and a few μm thick. SEM observation proved each filament to be a…