Materials Literature
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Combined scanning tunneling microscopy (STM), X-rays photoelectron spectroscopy (XPS) and density functional theory (DFT) studies have probed the bonding configurations and mobility of trimethylacetic acid (TMAA) molecules on the TiO(2)(110) surface at RT. Upon TMAA dissociation through deprotonation, two distinctly d…
Multilayer polymer films based on host–guest interactions were formed on gold surfaces covered with self-assembled monolayers terminated by β-cyclodextrin groups using poly(N-hydroxypropylmethacrylamide) derivatives bearing ferrocene or β-cyclodextrin moieties.
This feature article provides an overview of the preparation of functional nanofibers by combined electrospinning, controlled radical polymerization and 'Click Chemistry'. A combination of the powerful capability of controlled radical polymerization and 'Click Chemistry' for the synthesis of functional macromolecules…
We report on the thermoelectric properties of Fe2-x(V1+x-yTiy)Al alloys (−0.04≤x≤0.02, 0≤y≤0.10). While a small deviation from the stoichiometric Fe2VAl composition causes an enhancement in the Seebeck coefficient, a slight substitution of Ti for V leads to a further increase in the Seebeck coefficient and a decrease…
This paper presents a method for the computer aided design of high gain patch antenna with Zero-Refractive-Index (ZRI) metamaterials using Micro-Genetic Algorithm (MGA) and finite-difference time-domain (FDTD). The ZRI metamaterials, which is composed of metallic grids with periodic square lattice and slices of medium…
In this communication, we report that the depletion zone thickness of the p-n junction between an n-type ZnO and a p-type polyaniline could be controlled by UV and visible light illumination. Based on this princile, photoresponsive sensors were constructed by combining polyaniline thin film and ZnO nanorods. Different…
The basic problem of weak interaction between odd electrons in graphene and silicene is considered in the framework of the broken spin symmetry approach. This approach exhibits the peculiarities of the odd-electron behavior via both enhanced chemical reactivity and magnetism.
The heat capacity of cotton microcrystalline cellulose was measured on an adiabatic vacuum calorimeter over the temperature range 80–330 K, and the differential thermal analysis data on the substance were obtained from 80 to 550 K. The enthalpy of cellulose interaction with water was measured at 303 K using a differen…
Dispersion polymerization of styrene was performed in the presence of methacryloxymethyltrimethoxysilane-derivatized silica seeds in various experimental conditions in order to get micron-sized polystyrene/silica clusters of controlled morphology. It is demonstrated that asymmetric clusters (dumbbell-like or snowman-l…
A luminescent phosphonium-containing polyelectrolyte (P1-OHx) has been prepared by polymerization of a chromophore-containing diphosphine. The resultant cationic polyelectrolyte displays solvatochromism and undergoes facile layer-by-layer assembly with anionic poly(acrylic acid) to form smooth, well-defined films. Sol…
Two extended nickel string complexes, [Ni(7)(bnapy)(4)Cl(2)](Cl)(2) (2) and [Ni(9)(bnapya)(4)Cl(2)](PF(6))(2) (3) (bnapy(2-) = 2,6-bis(1,8-naphthyridylamido)pyridine and bnapya(3-) = bis(6-(1,8-naphthyridylamido)pyridyl)amido), which possess two redox-active [Ni(2)(napy)(4)](3+) units, were synthesized and characteriz…
Novel ferromagnetic-dielectric particulate composites of Ni 0.5 Zn 0.5 Fe 1.95 O 4− δ (NZF) and PbZr 0.52 Ti 0.48 O 3 (PZT) were prepared by conventional ceramic method. The presence of two phases in composites was confirmed by XRD technique. The variations of dielectric constant () with frequency in the range of 100…
A novel family of lanthanide zinc carboxylate compounds was synthesized, characterized (structural determination and luminescent behavior), and investigated for utility as single-source precursors to Ln-Zn-O nanoparticles. Carboxylic acids [H-ORc = H-OPc (H-O(2)CCH(CH(3))(2), H-OBc (H-O(2)CC(CH(3))(3), H-ONc (H-O(2)CC…
The effect of benzene fluorination on C-H...pi interactions is studied using a number of computational methods applied to a range of intermolecular complexes. High level wavefunction methods (CCSD(T)) predict a slightly greater interaction energy for complexes of benzene with methane or fucose, compared to correspondi…
Nano-composite of single walled carbon nanotubes (SWCNTs) and iron phthalocyanine, peripherally tetra-substituted with diethylaminoethanethiol (complex 2), was fabricated and characterized by infra red (IR) spectroscopy, X-ray diffraction (XRD) and transmission electron microscopy (TEM). TEM technique gave a convincin…
The Journal of Aerospace Technology and Management is a techno-scientific publication serialized, edited, and published by the Institute of Aeronautics and Space (Instituto de Aeronáutica e Espaço-IAE).
As is known, paclitaxel (PTX), one of the most effective anticancer drugs on the market today, has been demonstrated in clinical trials against a wide variety of tumors, including ovarian carcinoma...
The preparation of SiO2 ceramics with controllable porous structure from fir flour templates via sol-gel processing was investigated. The specific size the fir flour, which was treated with 20 % NaOH solution, was infiltrated with a low viscous silica sol and subsequently calcined in air, which resulted in the formati…
In this paper, a comparative study on the fracture toughness of woven glass fibre reinforced polypropylene, chopped glass fibre reinforced polypropylene and nanoclay filled polypropylene composites is presented. Nanoclays (Cloisite 15A) of 1 wt. % to 5 wt. % were filled in polypropylene (PP) matrix and they were subje…
Purpose of the review: This work reviews novel sources of edible films, coatings and formulations, including combined materials and a lipid phase, and highlights the main results of the most recent investigations carried out on the topic. New tendencies based on the incorporation of diverse active compounds (antimicro…