Materials Literature
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We herein report a water-based sol-gel approach towards porous mixed Si/Ti oxides using co-precipitated glycol-modified precursors. By adjusting synthesis parameters such as the pH value and the Si/Ti ratio of the precursor, the morphology as well as the Si/Ti-composition of the resulting mixed oxide particles can be…
It is found that the triboluminescence spectra of crystalline hydrates of inorganic salts of Ln 3+ (Ce 3+ , Pr 3+ , Gd 3+ , Eu 3+ , Tb 3+ , and Dy 3+ ) during mechanical trituration and ultrasonic treatment (22 kHz) of crystal suspensions in perfluorodecalin (in the sonotriboluminescence) exhibit gaseous and solid-sta…
Superelasticity at temperatures between 77 K and 273 K in Cu-17Al-15Mn alloy was investigated. In this alloy, where no thermally-induced martensitic transformation appears, an excellent superelasticity with recovery strain of 8.5% was confirmed at 77 K. The critical stresses for stress-induced martensitic transformati…
A series of polynuclear mixed-ligand tris(pyrazolyl)methane iron(II) complexes displaying high temperature spin crossover behaviour has been synthesised. These complexes are of the type [(Fe((3,5-Me(2)pz)(3)CH))(n)(μ-L)](BF(4))(2n), where μ-L is one of five bridging ligands X(CH(2)OCH(2)C(pz)(3))(n), (X = the central…
We use spectroscopic ellipsometry to study the elastic and thermodynamic properties of the structural first-order transition of the cooperative Jahn–Teller solid, RbMn[Fe(CN)6]. While the analysis of the thermal dependence of the dielectric constant revealed a remarkable energy shift in the metal-to-ligand charge tran…
The effect of warm rolling in the 50°C–300°C temperature range on the microstructure, stored energy and crystallographic texture of a 3 mass-% Si steel was analyzed. Both rolling and annealing texture were significantly affected by warm rolling. Dynamic strain aging (DSA) was observed in the temperature range 150°C–30…
In this research, we report an innovative, chemical strategy for the in situ synthesis and direct two-dimensional (2D) arraying of various nanoparticles (NPs) on graphenes using both programmed-peptides as directing agents and graphenes as pre-formed 2D templates. The peptides were designed for manipulating the enthal…
Highly ordered spinel ferrite MxFe3−xO4 (M = Ni, Co, Zn) nanotube arrays were synthesized in anodic aluminium oxide (AAO) templates with a pore size of 200 nm by combining a liquid phase deposition (LPD) method with a template-assisted route. The morphology of the transition metal ferrite nanotubes was characterized b…
Superhydrophobicity results from nano- and/or micro- protrusions present on a hydrophobic surface. Such surfaces are commonly characterized by water advancing contact angle, which amounts to at least 150°. Contact angle hysteresis also appears on such surfaces. Generally, two types of wetting are usually considered fo…
Although the interaction between cells and poly(ethylene glycol) (PEG) hydrogels is well documented, there lacks a thorough investigation into the adsorption of blood proteins on these surfaces which dictates the observed cellular and in vivo host response. Thus, a clear understanding of how surface-bound proteins med…
Three novel octatungstate-supported tricarbonyl metal derivatives have been synthesized and characterized, which represent the first examples of isopolyoxotungstates-supported carbonyl metal compounds.
This paper deals with an experimental study on the properties of pultruded jute fiber reinforced unsaturated polyester composite (PJFRC). The ratio of fiber to matrix is approximately 70:30 by volume. Compression and flexural testing were performed in order to study the mechanical properties while TMA and DMTA were us…
Sisal paper has been introduced as a new reinforcement form in natural fibre based polymer composites. Sisal fibre obtained from Agava sisalana was transformed to pulp with moderate beating to retain sufficient reinforcing strength in split fibres, and then was converted to handmade paper form. The paper so obtained w…
Thermoelectric Characteristics of Electrochemically Deposited Bi2Te3 and Sb2Te3 Thin Films of Relevance to Multilayer Preparation, Ma, Yi, Ahlberg, Elisabet, Sun, Ye, Iversen, Bo Brummerstedt, Palmqvist, Anders E. C.
The common approach of silver nanoparticles activation for surface enhanced Raman spectroscopy often exploits an addition of chloride ions, generally at low concentrations of about 0.1–10 mM in the final dispersion. For the first time, we report the applicability of a highly concentrated NaCl solution (final concentra…
The transmission spectra of microwave electromagnetic radiation interacting with a sample are used to determine the complex permittivity of a composite material based on a two-component epoxy adhesive having a certain volume fraction of inclusions in the form of multilayer carbon nanotubes or fine graphite particles.…
Ripening of AgCl nanoparticles with a bimodal size distribution has been carefully studied in ethylene glycol containing poly(vinyl pyrrolidone) (PVP) as capping molecules and at elevated temperatures (e.g., 160 °C). The resulting AgCl particles exhibit high uniformity in size and cube-tetrapod morphology that are sig…
This communication reports on the possibility to achieve the direct production of either carbamazepine crystals or carbamazepine–saccharin cocrystals from water/ethanol solvent mixtures by using membrane-based crystallization technology, by choosing the opportune initial conditions.
Polyaniline (PANI) film in the form of emeraldine salt (ES) doped with anthraquinone-2-sulfonate (AQS) was synthesized by a novel electrochemical doping-dedoping-redoping method on pre-activated spectroscopically pure graphite electrode surface. SEM showed the highly porous microstructure with sponge-like morphology o…
Determination of metal oxidation state under relevant working conditions is crucial to understand catalytic behaviour. The reduction behaviour of Pt and Re was evaluated simultaneously as a function of support and solvent in a pressurized reactor (autoclave). The bimetallic catalysts are used in selective hydrogenatio…