Materials Literature
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The magnetic properties of small ${\text{Cr}}_{N}$ clusters $(N\ensuremath{\le}6)$ are investigated in the framework of density-functional theory. The interplay between electron correlations, cluster structure, and magnetic order is quantified by performing fully spin-unrestricted calculations allowing for noncollinea…
Supramolekularer Kleber: Die photoinduzierte Isomerisierung von difunktionellen Azobenzolen wird verwendet, um die molekulare Erkennung und Adhäsion von Cyclodextrin(CD)-Vesikeln herbeizuführen und aufzulösen. Die Wirkung dieses lichtreaktiven supramolekularen Klebers beruht auf der cis-trans-Isomerisierung der Azogru…
A pulsed arc discharge source was used to prepare gas-phase, aluminum hydride cluster anions, Al(n)H(m) (-), exhibiting enhanced hydrogen content. The maximum number of hydrogen atoms in Al(n)H(m) (-) species was m=3n+1 for n=5-8, i.e., Al(n)H(3n+1) (-), and m=3n+2 for n=4, i.e., Al(4)H(14) (-), as observed in their m…
Abstract Raman and infrared (IR) spectra of defect pyrochlores TaWO 5.5 , NH 4 SbWO 6 ·H 2 O, HSbWO 6 ·H 2 O, LiSbWO 6 ·H 2 O, NaSbWO 6 ·H 2 O, KSbWO 6 , RbSbWO 6 , CsSbWO 6 , and TlSbWO 6 were measured. The obtained spectra are discussed using the factor group approach for the cubic Fd ‐3 m space group, and assignmen…
Microstructures such as intergranular glassy films (IGFs) are ubiquitous in many structural ceramics. They control many of the important physical properties of polycrystalline ceramics and can be influenced during processing to modify the performance of devices that contain them. In recent years, there has been intens…
In this paper, we describe a method to load a microfluidic device, the SlipChip, via dead-end filling. In dead-end filling, the lubricating fluid that fills the SlipChip after assembly is dissipated through the gap between the two plates of the SlipChip instead of flowing through an outlet at the end of the fluidic pa…
Dispersed and spherical Y 2 O 3 :Eu 3+ red phosphor particles were prepared by the urea homogeneous precipitation method. In 2 O 3 nanoparticles were successfully coated on the surface of the phosphor. Phase compositions, morphologies, photoluminescence (PL) spectra, and cathodoluminescence (CL) properties of Y 2 O 3…
A substrate coated with an achiral polyimide alignment layer was scribed bidirectionally with the stylus of an atomic force microscope to create an easy axis for liquid crystal orientation. The resulting noncentrosymmetric topography resulted in a chiral surface that manifests itself at the molecular level. To show th…
The magnetic properties of Cr-doped wurtzite ZnS nanowires were studied through first-principles computations. At a low doping concentration of 2.08% (one Cr atom in a 96-atom supercell), the Cr atom prefers to substitute for the surface four-coordinated Zn atom in the groove of the ZnS nanowire with a diameter of 1.2…
The effects of anionic surfactants on the aggregation-induced emission (AIE) feature of cationic M-silole molecules have been studied. The electrostatic binding of M-silole with the surfactants greatly promotes the aggregation of the mixtures. The M-silole/surfactant aggregates at 1:1 charge ratio exhibit the maximum…
Determination of cracking kinetics by thermogravimetric analysis (TGA) is attractive but requires careful experimental design to ensure consistent results. Here, we examine three methods for determining kinetic parameters by TGA: differential analysis at a constant heating rate (differential), temperature for constant…
Focal conic domains are typically the "smoking gun" by which smectic liquid crystalline phases are identified. The geometry of the equally spaced smectic layers is highly generic but, at the same time, difficult to work with. In this Letter we develop an approach to the study of focal sets in smectics which exploits a…
An unprecedented 5,6-dihydroxyindole macrocycle (4) featuring a rigid twisted backbone was obtained by biomimetic oxidative cross-coupling of the 2,2'-biindole 2 and triindole 3. A putative reaction intermediate, 2-quinone, was detected and characterized by pulse radiolysis and DFT calculations. Discovery of 4 indirec…
Because of the combination of laminar grain structures with special Al 2 O 3 –TiO 2 –ZrO 2 ‐compositions, free‐standing flame spraying coatings with superior thermal shock properties were produced presenting a slightly increasing strength plateau up to 900 K temperature gradient and a secondary low strength plateau at…
We investigate the phase diagram of a two-band frustrated Hubbard model in the framework of dynamical mean-field theory. While a first-order phase transition occurs from a paramagnetic (PM) metal to an antiferromagnetic (AF) insulator when both bands are equally frustrated, an intermediate AF metallic phase appears in…
Abatement of pollutant emissions over platinum-containing catalytic converters of lean operated engines is studied. Several close-to-production model catalysts with varying platinum loading and hydrothermal aging procedures are characterized by BET, HR-SEM, HR-TEM, and CO-TPD. Pollutant conversion is numerically inves…
MCM-41 type mesoporous silicate particles with spherical morphology containing copper nanospecies were synthesized by conventional hydrothermal synthesis. A narrow distribution of silicate particle sizes between 2 and 3 μm and a well-defined mesoporosity were evidenced by electronic microscopy, even for loadings of co…
The two charge-density wave (CDW) transitions in NbSe3 were investigated by scanning tunneling microscopy (STM) on an in situ cleaved (b, c) plane. The temperature dependence of first-order CDW satellite spots, obtained from the Fourier transform of the STM images, was measured between 5 and 140 K to extract the surfa…
The nickel hydroxides (β-Ni(OH) 2 ) with different shapes such as hexagonal nanosheets, irregular nanosheets, and nanoparticles were synthesized in the absence of SO 4 2− ions and in the presence of 0.00−3.00 mmol of the added NaOH using a hydrothermal method. The β-Ni(OH) 2 phase with brucite-type structure was confi…
Methacrylate-functionalized cubic silsesquioxane homopolymers [p(MA-CSSQ)] were synthesized by reversible addition-fragmentation chain transfer (RAFT)-mediated living radical polymerization in the presence of dodecyl(dimethylacetic acid)trithiocarbonate (DDTA) chain transfer agent, and their polymerization kinetics we…