Materials Literature
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The objectives of this study were to examine the effects of fiber content and extrusion parameters on flax-fiber-reinforced polyethylene composites and to determine the optimum values for the same. The flax fibers were chemically pretreated, ground, and mixed with powdered polyethylene. The mixture was extruded, pelle…
The amide-group containing amphiphile 4-N-octanoyl-aminobenzoic acid sodium salt is able to thermoreversibly form supramolecular hydrogels in aqueous solutions of alkanine sodium salts. The supramolecular assemblies can be transferred without destruction by a mold-casting/drying process into self-supporting macroscopi…
Abstract An innovative way to improve fire‐retardant properties of different polymers by applying intumescent coatings on their surface has been studied. Two polymers have been investigated: polypropylene and polycarbonate. The surfaces were first subjected to a flaming treatment in order to clean them and to increase…
We report a doping-dependent electronic Raman-scattering measurements on iron-pnictide superconductor $\text{Ba}{({\text{Fe}}_{1\ensuremath{-}x}{\text{Co}}_{x})}_{2}{\text{As}}_{2}$ single crystals. The ${\text{B}}_{2g}$ Raman spectrum at optimal doping is consistent with a strongly anisotropic gap on the electron poc…
Abstract This work evaluates the behavior of sandwich and spaced plates subjected to high‐velocity impacts. The sandwich structures were made of glass/polyester face‐sheet and a PVC foam core. The spaced plates were made of two plates of the same material of the sandwich face‐sheet at a distance equal to the core thic…
Abstract The composite of polyaniline and polypyrrole (PPY‐PANI) was prepared by two‐step electrochemical polymerization method. Techniques of scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), and thermal gravity analysis (TG/DTG) measurements were used to characterize the morphology…
The atomic force microscope fiber probe is used to directly measure the forces and friction between two human hairs under various conditions. It is shown that the forces between the hair fibers in solution can be well explained by a DLVO interaction and that cationic surfactant modifies the interactions in a manner en…
Abstract We report on the fabrication and optoelectronic properties of p‐n heterojunction arrays of p + ‐type Si and aligned n‐type SnO 2 nanowires with high rectification ratios of >10 4 at ±15 V. The electrical stability of the p‐n heterojunction devices was improved by coating the junction with poly(methylmethac…
Abstract The mixed solution of poly (ethylene terephthalate) (PET)/carbon black (CB) and PET/modified CB (m‐CB) were coated on glass substrates to fabricate light screening films. m‐CB was prepared using a solid phase modification method through mechanical blending of CB and 2‐(2′‐Hydroxy‐5′‐methylphenyl)‐benzotriazol…
A recognized safety issue for future fusion reactors fueled with deuterium and tritium is the generation of sizeable quantities of dust. Several mechanisms like plasma disruptions, Edge Localized Modes (ELM) and Vertical Displacement Events (VDE) resulting from material response to plasma bombardment in normal and off…
A series of comb-like fluorinated poly(oxyethylene)s having different content of fluoroalkyl side group were prepared to examine the effect of the surface structure variation on the surface properties. When the thin films of the polymers having ≥58 mol % of fluoroalkyl side groups were annealed, surface energy decreas…
In comparison to the previous lengthy approaches, we described a general and simple strategy for engineering the superlattice assembly of IV-VI semiconductor nanocrystals (NCs) with tunable sizes and morphologies. Not only the well-studied spherical NCs but also some special-shaped NCs, such as the quasi-cubic, cubic,…
Nanoparticulate technology is of particular use in developing a new generation of more effective cancer therapies capable of overcoming many biological, biophysical and biomedical barriers that the body stages against a standard intervention. Targeted delivery of drug molecules to tumor tissue is one of the most inter…
The Thermochemical Power Group (TPG) of the University of Genoa designed and installed a complete hybrid system emulator test rig equipped with a 100 kW recuperated micro gas turbine, a modular cathodic vessel located between recuperator outlet and combustor inlet, and an anodic recirculation system based on the coupl…
We describe a simple metamaterial homogenization procedure that calculates a limited set of constitutive parameters that are functions of both the frequency $\ensuremath{\omega}$ and the wave number $\mathbf{k}$. This procedure is based on describing the inclusions of the metamaterial with current sheets excited by th…
The systematic exploration of the phase diagram of the GeO(2)-1,6-diaminohexane-water-pyridine-HF system has allowed the identification of specific roles of the HF, H(2)O contents, and HF/H(2)O ratio in the formation of Ge(7)X(19) (Ge(7)), Ge(9)X(25-26) (Ge(9)), and Ge(10)X(28) (Ge(10)) clusters (X = O, OH, F). This w…
In this Article, we combine the characters of hyperbranched polymers and the concept of double-hydrophilic block copolymer (DHBC) to design a 3D crystal growth modifier, HPG-COOH. The novel modifier can efficiently control the crystallization of CaCO(3) from amorphous nanoparticles to vaterite hollow spheres by a nonc…
The cover shows a close up of a woven smart textile (rolled up to demonstrate bendability) that combines thin-film electronic devices and commercial integrated circuits with plastic fibers, as reported on p. 5178 by Kunigunde Cherenack and co-workers. The LEDs are actuated to show the inherent electronic functionality…
Abstract La 1–X Ca X MnO 3 (X = 0.0, 0.2, 0.4, and 0.6) perovskite oxides were synthesized using the citrate gel method. Thermogravimetry and differential thermal analyses, x‐ray diffraction, scanning electron microscopy, and specific surface area results were used for characterization of the perovskite powders obtain…
Abstract The Ti–Ni–W two‐phase shape memory alloy (SMA) thin film system is presented as a prototype for new SMAs with tailorable thermal transformation hysteresis (Δ T ). The concept is to combine the SMA TiNi with almost insoluble W to create the two‐phase system (TiNi)–( β ‐W). This system behaves like a pseudobina…