Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The complexes of europium with dibenzoylmethane (= HDBM) and mixed-ligand complexes containing 1,10-phenanthroline (= phen) or 4,7-diphenyl-1,10-phenanthroline (= dpp) are synthesized by different methods (already proposed in the literature) and their elemental composition, I.R., 1H and 13C NMR, and fluorescence excit…
High-resolution x-ray photoelectron spectroscopy of strontium bismuth tantalate films revealed distinct chemical states of constituent atoms in fluorite and perovskite crystals. Reflecting the number of nearest-neighbor oxygen atoms coordinated with Bi3+ ions, the Bi 4f peak could be deconvoluted into Bi2O3 (sixfold c…
We use numerical simulations to study the phase behavior of a system of purely repulsive soft dumbbells as a function of size ratio of the two components and their relative degree of deformability. We find a plethora of different phases, which includes most of the mesophases observed in self-assembly of block copolyme…
The paper contains a detailed discussion of the electronic structure of the novel hard and thermally stable amorphous SiBCN materials. We focus on the weight of individual electronic states on different elements, bond types, bonds of different lengths, and the number of atoms and clusters of atoms the states are local…
The bulk modulus and thermal expansion of Zn3P2 has been investigated at pressures up to 21 GPa and temperatures down to 100 K. The experimental zero-pressure bulk modulus is 80.7±1.8 GPa, in accordance with the bulk modulus scaling and lattice properties of the related compound Cd3P2. A tetragonal to orthorhombic pha…
A series of Sn1-xNixO2 films were fabricated by sol-gel method. All samples have pure rutile structure and exhibit room temperature ferromagnetism (RTFM). Magnetic moment per Ni ion decreases with the increase of Ni doping because antiferromagnetic super-exchange interaction takes place in the nearest neighbour Ni2+ i…
Epitaxial ZnO films were grown on single crystal spinel substrates at 90 °C in water. Hall measurements showed that the n-type carrier concentration and conductivity of the ZnO films decreased as postgrowth annealing temperature increases or pH of the growth solution decreases. At the same time, x-ray photoelectron sp…
Reducing the pixel dimensions of liquid crystal microdisplays in search of high resolution has a fundamental impact on their electro-optic behavior. The liquid crystal director orientation becomes distorted due to fringing fields and diffraction effects influence the optical characteristics of the device once the stru…
Long term relaxation of the photovoltaic current in poled and then short-circuited capacitors with polycrystalline Pb(ZrTi)O3 (PZT) film, where (111) oriented PZT grains are separated by ultrathin semiconductor PbO phase is studied. The quantum energy of the excitation light is lower than PZT band gap but higher than…
Abstract Role‐sharing functionalized cellulose derivatives having Mg, Zn, Cu, and Pd porphyrins are used for photocurrent generation system fabricated by the LB technique, mimicking the array of natural photosynthetic light‐harvesting systems. These polymers exhibited different absorption and redox properties in solut…
In colloidal crystals of spheres, dislocation motion is unrestricted. On the other hand, recent studies of relaxation in crystals of colloidal dimer particles have demonstrated that the dislocation dynamics in such crystals are reminiscent of glassy systems. The observed glassy dynamics arise as a result of dislocatio…
The diffusion of rare-earth ion, Yb3+, into ZnO lattice has been measured using spatially resolved electron energy-loss spectroscopy in transmission electron microscopy. Although a trace of Yb3+ can be detected in ZnO, the diffusion distance was only in a magnitude of several tens of nanometers. It also discovered tha…
We report on single-molecule fluorescence of an aluminum phthalocyanine dye associated with PAMAM dendrimers at a glass surface. The fluorescence decays of the phthalocyanine−dendrimer complex deposited from a solution at pH 3 are monoexponential and with lifetimes closely distributed around its natural fluorescence l…
Ultrabroadband sensitization of near infrared emission through energy transfer from Pb to Yb ions in LiYbMo2O8:Pb has been achieved upon ultraviolet (UV)-blue light excitation varying from 300 to 450 nm. The excitation band at 300–370 nm can be assigned to the charge transfer state of MoO42− groups, while the band at…
By means of molecular dynamics simulations of model dendrimers, we analyze the dependence of the bulk density and molecular packing on the dendrimer molecular weight and intrinsic stiffness. We find that the density is consistently higher in flexible dendrimers than in the rigid ones with a large bending angle. The de…
The wettability of electrodeposited zinc oxide (ZnO) thin films has been rationally controlled by individually engineering surface topography and surface chemical structure. We have studied the wettability of hydrophobic ZnO thin films that were rendered ultrahydrophobic by coating with low surface-energy self-assembl…
Harnstoff lockert auf: Harnstoffderivate geben vielseitige Lösungsmittelsysteme für die Synthese kristalliner Festkörper ab. Die reversible Bindung der Harnstoffderivate an Metallzentren der Gerüste führt zu einer Reihe von porösen Materialien mit zugänglichen Metallzentren.
We demonstrate the formation and spatial modulation of strongly coupled gallium selenide quantum dot (QD) nanoassemblies suspended in a nematic liquid-crystal (NLC) matrix at room temperature. Using static and dynamic optical techniques we show that the coupled QDs aggregate with a well-defined directionality commensu…
Spin-coated alumina serving as a gate dielectric in thin film transistors shows interesting dielectric properties for low-voltage applications, despite a moderate capacitance. With Ga singly doped and Ga, Li co-doped ZnO as the active channel layers, typical mobilities of 4.7 cm2 V−1 s−1 and 2.1 cm2 V−1 s−1 are achiev…
The crystal structure of a L-threonine dehydrogenase (L-ThrDH; EC 1.1.1.103) from the psychrophilic bacterium Flavobacterium frigidimaris KUC-1, which shows no sequence similarity to conventional L-ThrDHs, was determined in the presence of NAD and a substrate analog, glycerol. The asymmetric unit consisted of two subu…