Materials Literature
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Abstract Long chain branching (LCB) were added to linear polypropylene (PP) using reactive extrusion in the presence of selected polyfunctional monomers (PFMs) and a peroxide of dibenzoyl peroxide (BPO). Fourier Transformed Infrared spectra (FTIR) directly confirmed the grafting reaction occurred during the reactive e…
The electrochemical properties of a metallosupramolecular network that undergoes reversible redox chemistry on indium-tin oxide (ITO)-coated glass substrates have been investigated. The redox-active osmium complexes are electrochemically accessible even for films with a thickness > 15 nm. The electrochemical data corr…
Abstract The Schiff base compound, 4‐[(2‐hydroxy‐3‐methylbenzylidene)amino]‐1,5‐dimethyl‐2‐phenyl‐1,2‐dihydro‐3H‐pyrazol‐3‐one, has been synthesized and characterized by IR, UV–vis, and X‐ray single‐crystal determination. Molecular geometry from X‐ray experiment of the title compound in the ground state have been comp…
We report on inelastic neutron-scattering (INS) measurements on the molecular spin ring ${\text{CsFe}}_{8}$, in which eight spin-5/2 Fe(III) ions are coupled by nearest-neighbor antiferromagnetic Heisenberg interaction. We have recorded INS data on a nondeuterated powder sample up to high energies at the time-of-fligh…
The influence of post-weld heat treatment (PWHT), solution annealing followed by aging at 480, 550 and 620°C on the galvanic corrosion in 17-4PH stainless steel weldment in 3·5%NaCl was studied. Potentiodynamic polarisation revealed that all PWHTs improve the passivity of weld region by increasing the pitting potentia…
The authors have demonstrated the hybridization of polyfluorene (PFO) polymer light-emitting diodes with CdSe-ZnS core/shell quantum dots (QDs) in different device structures. To achieve white light emission, the green and red QDs have been incorporated into the PFO as the single emissive layer. Furthermore, the whole…
We have studied mesogenic properties in the smectic- A(d)P(A) phase of an asymmetric bent-core liquid crystal by means of polarizing optical microscopy, second-harmonic generation (SHG), electro-optical (EO), and dielectric measurements. In homeotropically aligned cells, EO switching is clearly observed from a schlier…
Based on the theory of F. Gilmore ( Gilmore 1952 The growth or collapse of a spherical bubble in a viscous compressible liquid ) for radial oscillations of a bubble in a compressible medium, the sound emission of bubbles in water driven by high-amplitude ultrasound is calculated. The model is augmented to include expr…
Lead selenide (PbSe) and copper selenide (CuSe) nanoparticles were synthesized in aqueous phase at a relatively mild temperature (85 °C) in the presence of various cationic Gemini surfactants (12−2−12, 12−0−12, and 16−2−16) as capping/stabilizing agents. All nanoparticles exhibited clear core−shell (surfactant) morpho…
Abstract Potentialities of a new simple shear‐based scheme of the solid‐phase extrusion of polymers, named the equal channel multiple angular extrusion (ECMAE), for modification of semicrystalline polymer structure have been investigated by the example of low‐ and high‐density polyethylene (LDPE, HDPE), polyamide‐6 (P…
Highly ordered, free-standing, complex, two- or three-dimensional (2D or 3D) nanoparticle superlattice arrays were created by either evaporation-induced self-assembly or precipitation-induced self-assembly from the size-monodispersed ZnO nanoparticles functionalized by carboxylic and alkylthiol ligands. The synthesis…
A glucose sensor based on an organic electrochemical transistor (OECT) structure was prepared by vapor phase polymerization (VPP) of 3,4-ethylenedioxythiophene (EDOT). The poly(3,4-ethylenedioxythiophene) (PEDOT) film was introduced as the conducting polymer channel and a platinum wire was used as a gate electrode in…
The evaporation processes of water from the edge region of graphene sheets was investigated by means of the direct molecular orbital–molecular dynamics (MO–MD) method at the AM1 level. Five graphenes with n =1, 7, 19, 37, and 61 (where n is the number of benzene rings in the graphene) were examined as models of graphe…
Abstract Phase transformations in (GeTe) m (Sb 2 Te 3 ) n (m: n = 1:1; 1:2; 2:1) alloys and thin films on their basis were studied during thermal cycling by differential scanning calorimetry, and some thermal properties were determined. Exothermal peaks due to the amorphous → crystalline phase changes were observed in…
Six states of splitting waves are observed when an electromagnetic wave propagates through wedge-shaped chiral metamaterials. The chirality and electromagnetic parameters, as well as the material parameter factor, are the main influences controlling the refractive indices of the material and the rotations of the out-g…
Six kinds of organoclays were prepared through three kinds of polyols (PTMG, PEA and PCL) to investigate the effects of molecular weight and the chemical structure of organifiers. PTMG based organoclays showed higher ion-exchanged fraction than other organoclays and long chain organifier showed better efficiency in io…
We report a simple and low-cost nonlithographic approach to fabricate tapered silicon arrays for broad-band antireflective coatings. Wafer-scale, subwavelength-structured pyramidal arrays are directly patterned on Si using mixed self-assembled monolayers consisting of octadecyltrichlorosilane islands as KOH etching ma…
Thermo-exfoliated graphite (TEG)/CuO/Cu2(OH)3NO3:(Co2+/Fe3+) composites were prepared using a wet impregnation method and subsequent thermal treatment. The physicochemical characterization of the composites was carried out by powder X-ray diffraction (PXRD), scanning electron microscopy (SEM) and Ar temperature-desorp…
A developed system is presented for computer-aided calculation of the effective elastic properties of composite materials (CM) with various reinforcement structure (3D-reinforced, 4D-reinforced, textile reinforcement). The computation was based on the finite-element method for the solution of the so-called local probl…
Abstract In this report, we have attempted to explore whether the hardness equalization principle can be conceived analogous to the well‐established electronegativity equalization principle. We have relied upon the fact that the hardness, like the electronegativity, is a qualitative property, and there is commonality…