Materials Literature
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Electrical resistivity, specific heat, magnetic susceptibility, and magnetization of the crystalline approximant Cd${}_{6}$Sm are investigated in a temperature range 1.8\ensuremath{-}300 K. Both structural and magnetic transitions are clearly evidenced. A sharp structural phase transition is observed at ${T}_{\mathrm{…
A new recycling technology (namely ‘direct powder moulding’) is proposed to produce large rubber parts from spent tyres without any addition of virgin materials or linking agents. Rubber pads were produced by compression moulding of rubber powder mixtures which were obtained by mechanical grinding of ground tyre rubbe…
Abstract Silver nanoparticles (AgNPs) with large surface‐to‐volume ratio have been widely studied as a valuable material for their strong antimicrobial effect. However, the practical applications of AgNPs in health care and water purification are often hampered by the concern of their toxicity and possibility of intro…
We have investigated the Cu(111) surface after controlled injection of air by Auger electron spectroscopy (AES) and scanning tunneling microscopy (STM). During deposition, the temperature of the copper substrate was kept at room or elevated temperature. AES spectra show that mainly oxygen is adsorbed on the copper sur…
Abstract Regenerated silk fibroin films are normally produced by increasing the Silk II structure (β‐sheet content). In the present study, silk fibroin films were prepared by controlling the environmental temperature and humidity, resulting in the formation of silk films with a predominant Silk I structure instead of…
Abstract Octaepoxysilsesquioxane (POSS‐Ep) was first synthesized by the hydrolysis and condensation of γ‐[(2,3)‐epoxypropoxy]propyltrimethoxysilicane (KH‐560) with the presence of ethanol and HCl at 55°C for 72 h. Then, it was cured with 4,4′‐diaminodiphenylsulfone (DDS) and methylnadic anhydride (MNA), respectively.…
We have investigated the magneto-resistivity (MR) of FeSe 1− x Te x superconducting films on MgO substrate. The MR of pure FeSe and slightly Te-substituted films demonstrates regular Lorentz-type magnetic field dependence, MR ∼ B 2 . In highly Te-substituted samples, however, negative MR contribution due to the weak-l…
The book "Polycrystalline Materials - Theoretical and Practical Aspects" is focused on contemporary investigations of plastic deformation, strength and grain-scale approaches, methods of synthesis, structurals, properties, and application of some polycrystalline materials. It is intended for students, post-graduate st…
We used ab initio density functional theory in combination with an embedded cluster approach to calculate vibrational spectra and formation enthalpies of possible intermediates and side products (spectator species) in the synthesis of methanol out of syngas on the ZnO(0001) surface. Our investigations are based upon o…
The study of how both steric and electrostatic interactions affect the structure of liquids formed by quasitetrahedral molecules has been undertaken in this work. We have studied trichlorobromomethane (CBrCl${}_{3}$) and dibromodichloromethane (CBr${}_{2}$Cl${}_{2}$), both displaying a dipole along their C${}_{3\mathr…
Hyperbranched polymers have attracted increased interest because of their tunable properties, which are affected by their architecture and a wide range of different functional groups. Many applications of hyperbranched polymers have been proposed based on their liquid–liquid phase behaviour. In recent years, the Latti…
Abstract Three types of polyethylene (PE), low‐density PE (LDPE), linear low‐density PE (LLDPE), and high‐density PE (HDPE) were used as polymer matrices to prepare untreated as well as dicumyl peroxide (DCP) treated sisal fiber composites. The effect of polymer chain structure, addition of DCP, and sisal fiber loadin…
Durch eine galvanische Austauschreaktion von Silberclustern wurden Legierungscluster der Zusammensetzung Ag7Au6(H2MSA)10 synthetisiert (H2MSA=Mercaptobernsteinsäure). Die Cluster, die mit spektroskopischen und mikroskopischen Methoden charakterisiert wurden, lumineszieren mit einer Quantenausbeute von 3.5×10−2 bei Rau…
Antipodal twisted helical ribbons with lamellar bilayer structure were obtained by self-assembly of chiral amphiphilic molecules in water and water/ethanol. The handedness inversion of the molecular arrangement in these antipodal helical ribbons was investigated by using chiroptical spectroscopy and molecular probes i…
BACKGROUND: The inherent toxicity of unmodified Quantum Dots (QDs) is a major hindrance to their use in biological applications. To make them more potent as neuroprosthetic and neurotherapeutic agents, thioglycolic acid (TGA) capped CdTe QDs, were coated with a gelatine layer and investigated in this study with differ…
Coordination and biocidal aspects of lanthanide(III) complexes with 3-formyl-4-chlorocoumarin hydrazinecarbothioamide (L1H) and 3-formyl-4-chlorocoumarin hydrazinecarboxamide (L2H) are described with the support of elemental analyses, molecular weight, melting point, and molar conductance determinations along with the…
Secondary microplaty hematite (mplH) occurs in many different environments but importantly, where unmodified by metamorphism, it is the defining minor component of the high-grade BIF-hosted iron ores of the world that are dominated by martite (M, hematite pseudomorphs after magnetite). The term was introduced early du…
By thermally cycling single layer graphene in air, we observe irreversible upshifts of the Raman $G$ and 2$D$ bands of 24 and 23 cm${}^{\ensuremath{-}1}$, respectively. These upshifts are attributed to an in-plane compression of the graphene induced by the mismatch of thermal expansion coefficients between the graphen…
Room temperature oxidation of organic sulfides with polyvinylpyrrolidone-supported hydrogen peroxide (PVP-<TEX>$H_2O_2$</TEX>) in the presence of Mn(III) complexes of meso-tetraphenylporphyrin, Mn(TPP)X (X = OCN, SCN, OAc, Cl) and imidazole (ImH) leads to the highly chemoselective (ca. 90%) oxidation of sulfides to th…
Abstract Mesoporous organosilica materials with different contents of bistrialkoxysilyl imidazolium salts in the framework were synthesized by a one‐step synthesis. Textural characterization of the materials confirmed that the morphology and surface properties of the imidazolium‐bridged organosilicas depended critical…