Materials Literature
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To achieve enough reliability of monolithic ceramic capacitor, it is important to know the contribution of grain boundary and grain interior to its reliability and insulation resistance. As the number of grain boundaries per layer increased, mean time to failure (MTTF) increased. In addition, as the number of grain bo…
The π-extended cyclo[4]naphthobipyrrole 1a has been prepared via an Fe(III)-mediated oxidative cyclization of an alkyl-substituted naphthobipyrrole. The structure of this new expanded porphyrin, isolated as the deprotonated sulfate salt, was characterized by spectroscopic means, as well through a single crystal X-ray…
Achieving red emission from ZnO-based materials has long been a goal for researchers in order to realize, for instance, full-color display panels and solid-state light-emitting devices. However, the current technique using Eu(3+) doped ZnO for red emission generation has a significant drawback in that the energy trans…
MCM-41 synthesized at room temperature was functionalized with aminopropyltrimethoxysilane (APTMS). The functionalized MCM-41 were characterized by powder X-ray diffraction, scanning electron micrography (SEM), transmission electron-microscopy (TEM), nitrogen adsorption–desorption, and carbon, nitrogen, and hydrogen (…
In regenerative medicine, the generation of biocompatible substitutes of tissues by in vitro tissue engineering must fulfil certain requirements. In the case of human oral mucosa, the rheological properties of tissues deserve special attention because of their influence in the acoustics and biomechanics of voice produ…
The lamellar antiferromagnet CuCr${}_{1\ensuremath{-}x}$In${}_{x}$P${}_{2}$S${}_{6}$ (${T}_{N}$ \ensuremath{\approx} 32 K) rapidly loses magnetic percolation upon diamagnetically diluting the triangular Cu-Cr-P${}_{2}$ planar network with In${}^{3+}$ ions. For 0 \ensuremath{\le} $x$ 0.3 anti-ferroelectricity (${T}_{c}…
The effect of zinc promotion on the oxidation state of cobalt in Co/ZrO(2) catalysts was investigated and correlated with the activity and selectivity for ethanol steam reforming (ESR). Catalysts were synthesized by applying incipient wetness impregnation and characterized by using Brunauer-Emmett-Teller (BET), temper…
The 2D C/C-ZrC-SiC composites were prepared through precursor infiltration and pyrolysis (PIP) process using a hybrid precursor contained polycarbosilane and organic zirconium-contained polymeric precursor. The microstructures and ablation behaviors of the prepared composites were studied. The composition and microstr…
Nanoporous carbon refers to a broad class of materials characterized by nanometer-size pores, densities lower than water, large specific surface areas, and high porosities. These materials find applications in nanocatalysis and gas adsorption, among others. The porosity structure, that determines the properties and fu…
Soda als Wasserstoffspeicher: Natriumbicarbonat wurde in wässriger Lösung bei 100 bar H2 in Gegenwart eines RuII-Katalysators zu Natriumformiat hydriert, das bei Druckminderung wieder das Bicarbonat ergibt. Dieses echte Ladungs-/Entladungselement für die Speicherung und Freisetzung von Wasserstoff kommt ohne die Isoli…
Klare Sicht: Das aufkonvertierte Emissionsspektrum von KMnF3-Nanokristallen, die mit Yb/Er (18:2 Mol-%; siehe Bild) oder Yb/Ho (18:2 Mol-%) dotiert sind, offenbart starke Einzelbandemissionen. Die Anwendung dieser unvermischten Emission für die Bildgebung von tiefliegendem Gewebe wird demonstriert.
Stuck together: adenine/carbon nanotube hybrids trigger the formation of controlled-size catalytic silver nanoparticles on the nanotube surface. The catalytic efficiency of the resulting species was assessed in the oxidation of 2-methylhydroquinone to its corresponding benzoquinone, with complete recovery and without…
ZnO/SiO(2) core/shell particles were fabricated by successive coating of multilayer polyelectrolytes and then a SiO(2) shell onto ZnO particles. The as-prepared ZnO/SiO(2) core/shell particles were coated on poly(ethylene terephthalate) (PET) textiles, followed by hydrophobization with hexadecyltrimethoxysilane, to fa…
Trigger happy: Polysilsesquioxane (PSQ) nanoparticles that contain a PtIV-based active agent (1; see picture) can be used for the triggered delivery of chemotherapeutics. The cytotoxicity of 1 was superior to that of oxaliplatin against four cancer cell lines in vitro, and targeting further enhanced the cytotoxicity.…
CuO is an earth‐abundant, nontoxic, and low band‐gap material; hence it is an attractive candidate for application in solar cells. In this paper, a synthesis of CuO nanocrystals by a facile alcohothermal route is reported. The nanocrystals are dispersible in a solvent mixture of methanol and chloroform, thus enabling…
Abstract Self‐healing materials with dual interpenetrating microvascular networks enable two‐part healing chemistries and repeated healing of damage in a localized region. However, due to slow healing kinetics, multiple days are required between damage events to recover mechanical performance under ambient conditions.…
In order to assess the potential of porous Si as thermoelectric material we have performed thermal conductivity measurements in dependence of both temperature and average structure size. Investigations on samples with average structure sizes between 7 nm and 100 nm reveal a pronounced reduction in thermal conductivity…
The magnetic properties of the transition metal monoxides MnO and NiO are investigated at equilibrium and under pressure via several advanced first-principles methods coupled with Heisenberg Hamiltonian Monte Carlo. The comparative first-principles analysis involves two promising beyond-local density functionals appro…
NaMgH3 has been considered as a potential hydrogen storage material and is an intermediary phase in a number of complex-hydride destabilization reactions. Using careful pressure−composition−isotherm measurements, the hydrogen equilibrium plateau was shown to be flat with negligible hysteresis. The enthalpy of desorpti…
Au-Ag core-shell nanoparticles have been synthesized using synthetic fluorescent dipeptide β-Ala-Trp (β-Ala is β-alanine; Trp is l-tryptophan) in water at pH 6.94 and at room temperature. The synthesis of the Au-Ag core-shell nanomaterial does not involve any external reducing and stabilizing agents, and the constitue…