Materials Literature
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Fine (approximately 18 nm) particles of nickel ferrite were\nsynthesized by the sol-gel technique, and their structural properties\nwere evaluated by X-ray diffraction. Neoprene-based rubber ferrite\ncomposites were prepared by incorporating these nickel ferrite powders\nin the rubber matrix according to a specific re…
In comparison with the minimum energy criterion as an indicator of the most stable state, the minimum polarizability and maximum hardness principles have been examined to describe the relative stability of various isomers of nine gaseous all-metal clusters M4X- (Cu4Na-, Cu4Li-, Al4Cu-, Ag4Li-, Au4Li-, Ag4Na-, Au4Na-,…
The hair-counting technique using photosensors is a common method to measure the hairiness of the yarns. However, the literature recognizes some deficiencies of the technique regarding the sensor limitations. This paper describes a computer vision approach to simulate the photosensors and to investigate the parameters…
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Though synthetic fibres exhibit superior properties and performance compared to many natural fibres, the latter has still strong acceptance in many applications. Unconventional natural fibres are often explored due to their eco-friendliness and availability in many regions. Such fibres are often used in the low cost c…
This paper reports the results of an investigation of the optical properties of molecularly mediated thin film assemblies of nanoparticles. Thin film assemblies of gold nanoparticles of different sizes that are linked by dithiols and carboxylic acid functionalized thiols of different alkyl chain lengths are studied as…
We present pulsed electron spin resonance measurements of activated carbon fibers (ACFs) for pristine samples and after adsorption of nitrobenzene in the fibers' porous structure. Two-level tunneling state (TLS) model is discussed in order to define the nature of paramagnetic centers and to explain the electron spin-l…
Bi-doped glass optical fibers are a very promising active laser medium. Luminescence of Bi-doped glasses takes place in a spectral region of 1100-1500 nm [2], where no fiber lasers (or any other efficient lasers) exist. The glasses have very broad luminescence bands (200-400 nm) and long lifetime (200-700 μs). The…
Ever since the invention of the microscope, scientists and laypeople alike have marveled at the intricate patterning of the silica within the diatom cell wall, termed the frustule (Fig. 1). There are well over 10,000 species of diatoms in marine and freshwaters, and each species has a unique wall morphology (1). Altho…
Mesostructured silica−block copolymer thin films are demonstrated to provide orientationally ordered host matrixes for stable alignment of coassembled porphyrin J -aggregates with anisotropic optical properties. Visible light at 490 nm was absorbed anisotropically ( A ∥ / A ⊥ = 1.35) by aligned, hexagonally ordered (e…
Abstract When air‐permeable clothing is worn, vapor will penetrate to the inside of the clothing. The vapor can deposit onto the skin, thus, forming a potential health threat. In a previous article a model was presented, which describes the airflow around body parts, covered with clothing. This airflow profile is used…
Silicate‐based inorganic‐organic hybrid polymer systems have many unique properties including thermal stability and photo‐stability, chemical resistance with the combination of tunable optical properties. Two kinds of new UV‐patternable hybrid materials PSQ‐Ls were synthesized by a sol‐gel process at room temperature,…
We provide a detailed investigation of the second-order nonlinear optical and structural properties of Langmuir-Blodgett (LB) films of nonracemic thiohelicenebisquinone (THBQ). We prepare both X- and Y-type films of different thicknesses and characterize them using optical second-harmonic generation and atomic-force m…
A novel process for the microfabrication of metal oxide nanostructures is developed based on combining thin film deposition at high temperatures with the use of a Mo mask fabricated by atomic force microscopy lithography. The Mo mask is lifted-off using H2O2 solution after deposition of the oxide film. The figure show…
Abstract The nitrosylation of Co( H CTPP) ( 1 ) in CH 2 Cl 2 afforded [Co(CTPP C 2 H 2 Cl )(NO)] ( 2 ) with a chlorovinyl group substituent on the inner carbon atom of the N‐confused porphyrin ring. The spectroscopic data suggest that 1 exhibits an {Co(NO)} 8 electronic structure. The nitrosylation of 1 in the presenc…
We present a microscopic calculation of the Rayleigh (elastic light) scattering spectra for single-walled carbon nanotubes. Combining density-matrix formalism and the tight-binding model, we obtain results for nanotubes of arbitrary chiral index. In agreement with experiment, the calculated Rayleigh spectra of metalli…
In the present review, we discuss the sorting mechanism of peptide hormones and the biogenesis mechanism of secretory granules in view of the significance of the high cholesterol composition of secretory granule membranes. Peptide hormones and granin-family proteins are sorted to immature budding granules at the trans…
Experimental design method and principal component analyses were used to determine the most relevant parameters for the mechanical properties and the appearance of wet-spliced cotton/ elastane yarns. The results proved that a high-quality splice could be obtained in optimal conditions. Yarn linear density influenced b…
The type II isopentenyl diphosphate/dimethylallyl diphosphate isomerase (IDI-2) is a flavin mononucleotide (FMN)-dependent enzyme that catalyzes the reversible isomerization of isopentenyl pyrophosphate (IPP) to dimethylallyl pyrophosphate (DMAPP), a reaction with no net change in redox state of the coenzyme or substr…
X-ray photoemission electron microscopy (XPEEM) using synchrotron radiation illumination has been used to study the adsorption of human serum albumin (HSA) onto a phase segregated polystyrene/polymethylmethacrylate (PS/PMMA) blend surface from solutions of five different pH values. The absolute coverage of albumin on…