Materials Literature
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The alumina–zirconia (Al 2 O 3 –ZrO 2 ) system is considered as one of the most useful nanocomposites, finding widespread applications in structural field. To provide optimal performance, the scale reduction of the initial powder or of the final grain morphology is of particular importance. To accomplish this, we deve…
The occurrence of air-trapping inside poly-eta-caprolactone nanopits was investigated by measuring the contact angles of water droplets on a set of defined nanotopographies. It is shown that the advancing angles follow the Cassie-Baxter theory, thus revealing the presence of air bubbles inside the biodegradable nanopa…
Size effects, such as structure transition, have been reported in small clusters of alkali halide compounds. We extend the study to rare earth sesquioxide (Gd(2)O(3)) clusters which are as ionic as the alkali halide compounds, but have a more complicated structure. In a clean and controlled environment (ultra high vac…
The local structure of yttrium in Y-doped BaCeO 3 compounds was studied using X-ray absorption spectroscopy (XAS) at the Y K-edge. Data analysis shows that the local environment of Y 3+ changes, resulting in a distorted octahedron. The structural distortion found does not depend on the dopant amount at the investigate…
Three transition metals, Ni, Mo, and Ti, were reacted with SiCN at high temperatures, and the reaction products characterized by X‐ray diffraction. It was concluded that TiN is the most suitable interconnect material for the measurement of the electrical conductivity of SiCN at temperatures up to 1400°C. The TiN inter…
The design of coatings is like designing a system. Every coating has one or more specific functions that determine the choice of materials, and its architecture. In the case of environmental barrier coatings the topcoat must be chemically inert to the atmosphere. In high‐temperature applications the stresses arising f…
Abstract Spruce wood boards impregnated with Na 2 S 2 O 3 or Na 2 S 2 O 5 were studied with the cone calorimeter. The presence of Na 2 S 2 O 3 lowered the average heat release rate in comparison to untreated material. The total amounts of CO and CO 2 production were reduced by the treatment and also the specific extin…
The crystalline structures, magnetisms, and magnetotransport properties of ${\mathrm{La}}_{0.7}{\mathrm{Sr}}_{0.3}\mathrm{Mn}{\mathrm{O}}_{3}∕\mathrm{Sr}\mathrm{Ti}{\mathrm{O}}_{3}$ (LSMO/STO) superlattices and ${\mathrm{La}}_{0.7}{\mathrm{Sr}}_{0.3}\mathrm{Mn}{\mathrm{O}}_{3}$ (LSMO) films are studied. The transmissi…
Novel cationic porphyrin derivatives having a galactose or a bis(isopropylidene)galactose unit linked directly to a pyridine or to an aminophenyl group were characterized by electrospray tandem mass spectrometry (ESI-MS/MS). The electrospray mass spectra (ESI-MS) show the M(+) ions, since these porphyrins are already…
Different grades of starch, glycerol, and water were blended in order to produce a series of thermoplastic starch materials. The starch grades used included native potato starch and modified grades of native potato starch, high amylose potato starch, and amylopectin potato starch. The modification of the latter three…
You light up my life! Antibodies, when bound to a donor–acceptor-substituted stilbene, strongly fluoresce with colors ranging from blue to green. Photophysical and structural analyses indicate that antibody binding alters the excited-state behavior of stilbene. Such complexes may find in vitro and in vivo application…
Abstract Summary: P(TT‐ co ‐TI)s with up to 20 mol‐% of TI units were synthesized in order to modulate the thermal and mechanical properties of PTT and were characterized by FT‐IR, 1 H NMR, DSC, and DMA analysis. PTI and PTT were also synthesized for the purpose of comparison. The polymerizations proceeded via two ste…
The lithium vanadophosphate (LVP) glasses were synthesized through a conventional melt quench method for various modifier ( m ) to formers ( f ) ratios ( m / f ) [ m %Li 2 O/ f %{0.3V 2 O 5 +0.7P 2 O 5 }, where the m / f =0.43, 0.66, 1.0, 1.5, and 1.63]. Nature, structure, and glass transition T g temperature for the…
When a local mechanical perturbation is applied to the surface of a thin film of a mechanically interlocked molecule (a rotaxane), the molecules self-organize into periodic arrays of discrete dots or lines. The dimensionality of the nanostructures depends on whether the mechanical stimulus acts along a 1D line or over…
Isolated and complex: La2MgNi2H8 contains isolated dinuclear [Ni2H7]7− and tetranuclear [Ni4H12]12− anions (see picture). These are the first polynuclear solid-state nickel hydride complexes. Their formation upon hydrogenation of the intermetallic compound La2MgNi2 is associated with a metal–insulator transition.
A novel nanostructure of a side-to-side SnO 2 /ZnO/SnO 2 triaxial nanobelt has been achieved via a simple oxidation of the separated Zn and Sn powders. Each nanobelt has a broad inner ribbon of ZnO with two symmetric SnO 2 sides, and all of the belts are single crystal. This composite structure demonstrates the possib…
Calcium carbonate was crystallized on an eggshell membrane using a specially designed crystallizer. The crystallizer used was a jacketed cylindrical glass vessel with two compartments divided by an eggshell membrane. The calcium chloride and sodium carbonate solutions were separately placed in the two compartments. Se…
A new luminescent microporous terbium silicate Na3TbSi3O9·3H2O (TbSiO-CJ1) has been synthesized under mild hydrothermal conditions; its structure consists of helical sechser silicate chains, which are connected by TbO6 octahedra to form an open framework containing 9-ring channels along the [100] direction.
The phase transition between the ferroelectric and relaxor states for $0.8\mathrm{Pb}({\mathrm{Mg}}_{1∕3}{\mathrm{Nb}}_{2∕3}){\mathrm{O}}_{3}\text{\ensuremath{-}}0.2\mathrm{Pb}\mathrm{Ti}{\mathrm{O}}_{3}$ ceramics with high chemical homogeneity has been studied by measurements of the dielectric and elastic properties…
Verdrillte Röhren: Die Selbstorganisation kleiner organischer Moleküle ist ein neuer Syntheseansatz für Nanoröhren mit helicaler Chiralität. Aminosäurederivate von Naphthalindiimid bilden in Lösung wie im festen Zustand solche Assoziate. Die Chiralität der Nanoröhren wird durch die Aminosäure festgelegt, hängt aber ni…