Materials Literature
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SrCe 0.95 Tm 0.05 O 3−δ perovskite-type ceramic membranes offer high hydrogen selectivity, thermal stability, mixed protonic−electronic conductivity, and mechanical strength at temperatures above 600 °C. However, in order for the SrCeO 3 -based membranes to be used in industrial applications, the chemical stability of…
Abstract As a continuation of our previous studies on thermostable materials, heptacyclic laddersiloxanes and ladder polysilsesquioxane were synthesized. The first heptacyclic laddersiloxanes were obtained by chlorination of pentacyclic laddersiloxanes prepared using our stereocontrolled synthesis procedure; thereafte…
The fate of nanoparticles used as stabilizers in solids-stabilized, or Pickering, emulsion polymerization for the formation of armored hybrid polymer latexes was studied. We showed that disk centrifugation can be used as a powerful quantitative tool to analyze and determine the concentration of nanoparticles in the wa…
The phase diagram of ${\text{NdFe}}_{1\ensuremath{-}x}{\text{Co}}_{x}\text{AsO}$ for low cobalt substitution consists of a superconducting dome $(0.05<x<0.20)$ with a maximum critical temperature of 16.5(2) K for $x=0.12$. The $x=1$ end member, NdCoAsO, is an itinerant ferromagnet $({T}_{C}=85\text{ }\text{K})$…
Ordered phases of ABC star terpolymer melts are investigated using a generic reciprocal-space implementation of the self-consistent field theory (SCFT) of polymers. The most important feature of ABC star triblock terpolymers is that their three blocks are joined at one junction point. This distinct topology of ABC sta…
Chiroptical properties were induced in small (<2 nm) silver nanoparticles (NPs) grown on 1000 base pair poly(dA)−poly(dT) around their surface plasmon resonance wavelength. Cutting of the DNA template with DNase and separating the DNA coated NPs did not eliminate the chiroptical response. The induction of chirality in…
The synthesis of a series of new layered rare-earth hydroxide solid solutions and their transformation into (Eu(x)Gd(1-x))(2)O(3) crystallites are described. Highly crystalline platelets of Eu(x)Gd(1-x)(OH)(2.5)Cl(0.5) x 0.9 H(2)O solid solutions with various Eu(3+)/Gd(3+) ratios were prepared through a homogeneous pr…
Al 2 O 3 and its supported metal catalysts are widely used in deNO x catalysis, but the true nature of the catalytic sites and the structure−activity relationships are still unclear. By a set of systematic and comparative calculations, this study investigates the adsorption of NO and NO 2, and nitrate formation via th…
In the last few years, there has been increased interest in methods to improve the practical strength of inorganic glasses. During this same time period, new theoretical and experimental techniques have appeared. In this paper, we discuss this interest and indicate how and where these new techniques may help us to ach…
High-quality graphene flakes have been exfoliated directly from graphite by solvothermal treatment. By introducing the oil/water interface, graphene can be easily and quickly separated from the graphene/NMP solution, which overcomes shortcomings of the time-consuming method of filtration. At the same time, the graphen…
Eraserhead: A reversible nanoporous antireflection coating can be fabricated by assembly of layered double hydroxide nanoparticles with polyanions using an electrostatic layer-by-layer method followed by calcination. Antireflection properties of the coating can be switched between the porous and non-porous state by al…
The exciton quenching dynamics of single CdSe/CdS(3ML)ZnCdS(2ML)ZnS(2ML) core/multishell QDs adsorbed on glass, In2O3, and ITO have been compared. Single QDs on In2O3 show shorter fluorescence lifetimes and higher blinking frequencies than those on glass because of interfacial electron transfer from QDs to In2O3. Comp…
BACKGROUND: Nanocrystalline silver dressings have anti-inflammatory activity, unlike solutions containing Ag+ only, which may be due to dissolution of multiple silver species. These dressings can only be used to treat surfaces. Thus, silver-containing solutions with nanocrystalline silver properties could be valuable…
Honeycomb monoliths consist of a large number of parallel channels that provide high contact efficiencies between the monolith and gas flow streams. These structures are used as adsorbents or supports for catalysts when large gas volumes are treated, because they offer very low pressure drop, short diffusion lengths a…
We use angle-resolved photoemission spectroscopy to study the band structure of ${\text{BaFe}}_{2}{\text{As}}_{2}$ and ${\text{CaFe}}_{2}{\text{As}}_{2}$, two of the parent compounds of the iron arsenic high-temperature superconductors. Our high quality data reveals that although the Fermi surface is strongly three-di…
Quantitative insights into the stress-transfer mechanisms that determine the mechanical properties of tunicate cellulose whisker/poly(vinyl acetate) nanocomposites were gained by Raman spectroscopy. The extent of stress-transfer is influenced by local orientation (or anisotropy) of the whiskers, which in turn is gover…
Biaxially textured LuNi2BC thin films with Tc up to 15.8 K and a residual resistivity ratio up to 15 have been prepared. The films were deposited on MgO(110) substrates using pulsed laser deposition from a stoichiometric target. Via the precise control of the deposition rate, a biaxial texture is favored within a broa…
Magnetotransport measurements and x-ray photoemission spectroscopy were used to investigate the surface conductivity of ZnO. Near-surface downward band bending, consistent with electron accumulation, was found on the polar and nonpolar faces of bulk ZnO single crystals. A significant polarity effect was observed in th…
Diblock copolymer grafts covalently attached to surfaces have attracted considerable attention because of their special structure and novel properties. In this work, poly(N-isopropylacrylamide)-block-polystyrene (PNIPAAm-b-PS) brushes were prepared via surface-initiated consecutive atom-transfer radical polymerization…
The observation of a stable doublet pattern in the field-emission electron microscopy of a linear atomic chain requires a stable mechanism breaking the axial symmetry, which is not identified correctly by Mikhailovskij et al. [Phys. Rev. B 80, 165404 (2009)]. Using microscopic calculations, we attribute the observed p…