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。
A scattering polarizer is created by subjecting a polymer dispersed liquid crystal film to tensile strain. The optomechanical properties of the film are investigated by simultaneously measuring the stress–strain and polarization dependent optical transmission characteristics. The correlation between transmittances of…
Polystyrene (PS) substrates were functionalized by wet chemical grafting with 2-acrylamido-2-methylpropane-1-sulfonic acid (AMPS). Subsequently, TiO2 thin films were prepared by liquid phase deposition (LPD) with an average growth rate of 85 nm h−1; a maximum thickness of 750 nm was observed in our experiments. The cr…
Abstract The effects of dynamic vulcanization and blend ratios on mechanical properties and morphology of thermoplastic elastomeric (TPE) compositions, based on blends of nitrile rubber (NBR) and poly(styrene‐ co ‐acrylonitrile) (SAN), were studied. The TPE composition prepared by adding a rubber‐curatives masterbatch…
The crystal structures of the 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane, TCNQF(4), electron transfer salts of meso-tetraphenylporphinatomagnesium(II), [MgTPP][TCNQF(4)].PhMe and [MgTPP][TCNQF(4)].3(1,2-C(6)H(4)Cl(2)), and meso-tetrakis(3,4,5-trimethoxyphenyl)porphinatomagnesium(II), [MgT(3,4,5-OMe)PP][TCNQF…
Abstract The morphology of needle shaped crystals is, usually, ill‐predicted when using the common attachment energy approach. Here we explain the needle shape of triacylglycerol crystals on the basis of a two‐dimensional nucleation growth mechanism. For that the edge energies of 2D nuclei on the surfaces of the vario…
Abstract The control of crystal polymorphs was investigated using a WWDJ batch crystallizer and glycine as a model compound. The WWDJ batch crystallizer is a newly developed crystallizer, which is equipped with a slurry sprinkler named Wall Wetter fixed on the shaft of an impeller and a double‐deck jacket. When a conv…
β- Ga 2 O 3 single crystals doped with the Cr3+ ion were grown in an O2 atmosphere using the floating zone method. Electron paramagnetic resonance (EPR) spectra of the Cr3+ ion were recorded with an X band EPR spectrometer at 20 °C. The rotation patterns of Cr3+ spectra in the crystallographic planes together with spi…
Despite containing only relatively small molecular components, the structure of [Eu(H(2)O)(9)](1.5)(CTV)(6)(CH(3)CN)(5.5)(H(2)O)(7.5)[Co(C(2)B(9)H(11))(2)](4.5) (C(191)H(337.5)B(81)Co(4.5)Eu(1.5)N(5.5)O(57), a = 54.590(2) A, b = 37.5788(17) A, c = 31.8067(14) A, beta = 116.573(2) degrees, monoclinic, C2/c, Z = 8) is o…
A friction force microscope study in ultrahigh vacuum was conducted on an atomically flat SrTiO3(001) surface, where SrO and TiO2 domains were distinguished by the difference in friction force. It is revealed that the friction on the SrO became stronger with water adsorption relative to the TiO2 layer. The selective c…
Total-energy density-functional theory is combined with statistical pseudobinary alloy theory to investigate the thermodynamic stability within the ternary spinel nitride system ${\mathrm{Si}}_{3}{\mathrm{N}}_{4}\ensuremath{-}{\mathrm{Ge}}_{3}{\mathrm{N}}_{4}.$ The spinel structure has two cation sites; one of octahed…
We reported on hydrogen-bonding directed Layer-by-Layer assemblies by self-deposition of a kind of dendrimer bearing carboxyl groups on its periphery that act as hydrogen bonding donor as well as hydrogen bonding acceptor.
The verdazyl radical 1,5-dimethyl-3-(2,2'-bipyridin-6-yl)-6-oxoverdazyl (3) was prepared, and its homoleptic metal complexes M(3)(2)(2+).2X(-) (5, M = Mn(II); 6, M = Ni(II); 7, M = Cu(II); 8, M = Zn(II); X = ClO(4), PF(6)) were characterized by single-crystal X-ray diffraction and variable-temperature magnetic suscept…
The $4f5\stackrel{\ensuremath{\rightarrow}}{d}{4f}^{2}$ emission spectra of ${\mathrm{Cs}}_{2}M{\mathrm{PrCl}}_{6}$ $(M=\mathrm{N}\mathrm{a},\mathrm{L}\mathrm{i})$ and ${\mathrm{Cs}}_{2}{\mathrm{NaYCl}}_{6}:{\mathrm{Pr}}^{3+}$ have been recorded at temperatures down to 10 K. The spectra of ${\mathrm{Pr}}^{3+}$ in the…
We measure the defect density as a function of time at different temperatures in simulations of a two-dimensional system of interacting particles. Just above the solid to liquid transition temperature, the power spectrum of the defect fluctuations shows a 1/f signature, which crosses over to a white noise signature at…
Abstract Thermodynamic models for aqueous Ba 2+ ‐SO 4 2– ‐Na + ‐Cl – ‐solutions are compared in their accuracy to predict ion activities in saturated and supersaturated solutions. The Pitzer and the Bromley model are employed, taking into account ion pair formation of barium sulfate. Such models are then used to descr…
The two new dianhydrides, 2,2‘-bis(4‘ ‘- tert -butylphenyl)-4,4‘,5,5‘-biphenyltetracarboxylic dianhydride (BBBPAn) and 2,2‘-bis(4‘ ‘-trimethylsilylphenyl)-4,4‘,5,5‘-biphenyltetracarboxylic dianhydride (BTSBPAn), composed of a noncoplanar twisted biphenyl unit containing tert -butylphenyl or trimethylsilylphenyl groups…
Readily formed at nanoscale break junctions, arrays of individual spatially isolated, strongly electroluminescent Ag(2)-Ag(8) nanoclusters perform complex logic operations within individual two-terminal nanoscale optoelectronics devices. Simultaneous electrical excitation of discrete room-temperature nanocluster energ…
We present recent studies of the structural and electronic properties of alkali-metal intercalated single-wall carbon nanotubes using high-resolution electron energy-loss spectroscopy (EELS) in transmission. Changes in the nanotube structure and electronic properties due to intercalation were monitored by in situ EELS…
The supramolecular assembly of a ferrocene-porphyrin conjugate allowed ferrocene-based electrochemical sensing of the metalloporphyrin axial coordination via a "tail on-tail off" binding process.
Density-functional band-structure calculations including atomic displacements in the charge-density wave phase have been performed for the layered $1T\ensuremath{-}{\mathrm{TaS}}_{2}.$ This quasi-two-dimensional material exhibits a charge-density wave extending in all three dimensions. We find that the topmost occupie…